Offshore geology and geomorphology -- Point San Luis map area [sheet 5]

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: Janet T. Watt
Publication_Date: 2015
Title:
Offshore geology and geomorphology -- Point San Luis map area [sheet 5]
Geospatial_Data_Presentation_Form: vector digital data
Larger_Work_Citation:
Citation_Information:
Originator: Janet T. Watt
Originator: Samuel Y. Johnson
Originator: Stephen R. Hartwell
Originator: Michelle Roberts
Publication_Date: 2015
Title:
Offshore Geology and Geomorphology from Point Piedras Blancas to Pismo Beach, San Luis Obispo and Santa Barbara Counties, California
Geospatial_Data_Presentation_Form: Raster digital data; map
Series_Information:
Series_Name: Scientific Investigations Map
Issue_Identification: SIM 3327
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Online_Linkage: <https://dx.doi.org/10.3133/sim3327>
Online_Linkage: <https://pubs.usgs.gov/sim/3327/>
Description:
Abstract:
This part of SIM 3327 presents data for geologic units on the offshore geologic and geomorphic map of the Point San Luis map area, in the vicinity of Pismo Beach, California. The vector data file included in "Geology_PointSanLuis.zip," which is accessible from <https://pubs.usgs.gov/sim/3327/data/sim3327_data_catalog.html>.
Offshore geologic units were delineated on the basis of integrated analysis of adjacent onshore geology (see “Additional References for Onshore Geologic Mapping” list), seafloor-sediment and rock samples (Reid and others, 2006; Pacific Gas and Electric Company, 2011), multibeam bathymetry and backscatter imagery, magnetic data (Langenheim and others, 2009, 2012; Sliter and others, 2009), and high-resolution seismic-reflection profiles (Sliter and others, 2009). To maintain onshore-to-offshore consistency, map-unit symbols for the Mesozoic and Tertiary units reflect the published onshore-mapping usage. If no onshore-equivalent unit exists, as is the case with the Quaternary units, the map-unit symbols are made up of letters that indicate the following: the Period, usually followed by “m” for marine sediment; the predominant sediment type; and, finally, a geomorphic descriptor, if applicable.
Nearshore and inner shelf deposits are predominantly sand (Qms), as determined by seafloor sampling (Reid and others, 2006). These sandy-shelf areas locally include coarser grained units such as channel deposits (Qmc), rills (Qmr), and sorted bedforms (Qmss, Trembanis and Hume, 2011). Unit Qmss typically exists as erosional lags in scour depressions whose contacts with horizontal sand sheets of unit Qms are usually relatively sharp but, less commonly, are diffuse. These scour depressions, which generally form irregular to lenticular exposures that have abrupt landward contacts with bedrock, typically are a few tens of centimeters deep and range in size from a few tens of meters to more than 1 km2. Such scour depressions are common along this stretch of the California coast (see, for example, Cacchione and others, 1984; Hallenbeck and others, 2012), where offshore sandy sediment is relatively thin (and, thus, is unable to fill the depressions) owing to low sediment supply and also to erosion and transport of sediment during large northwest winter swells.
Inner shelf deposits (predominantly sand) grade to finer grained (mud and sand) outer shelf (Qmsf) and slope (Qmsl) deposits at depths greater than 70 m. The boundary between units Qms and Qmsf was determined on the basis of seafloor-sediment samples (Reid and others, 2006), as well as interpretation of multibeam backscatter imagery. This boundary likely shifts seaward or landward as a result of seasonal- to annual- to decadal-scale cycles in sediment supply, sediment transport, and wave climate. These shelf and slope deposits locally contain pockmarks (Qmp), hummocky relief (Qmsh), and landslide deposits (Qls). Landslide deposits may represent various forms of submarine sediment instabilities, including slumps, slides, and collapse depressions.
Where an older unit (typically bedrock) is overlain by a thin (less than 2 m) Quaternary deposit, a composite geologic unit is mapped; the composite unit, shown with a stipple pattern on the older unit, is designated by a composite label indicating both the overlying sediment cover and the lower (older) unit, separated by a slash (/). For example, Qms/Tus indicates that a thin sheet of Qms overlies Tus. Such units are recognized on the basis of high backscatter, low relief, continuity with moderate- to high-relief bedrock outcrops, and (in most cases) high-resolution seismic-reflection data. The overlying sediment is interpreted as an ephemeral layer that may or may not be continuously present, depending on storms, seasonal and (or) annual patterns of sediment movement, or longer term climate cycles.
Sea level was approximately 120 to 130 m lower during the Last Glacial Maximum (about 21 ka; see, for example, Lambeck and Chappell, 2001; Gornitz, 2009). This approximate depth corresponds to the modern shelf break, a lateral change from the gently dipping (0.8° to 1.0°) outer shelf to the slightly more steeply dipping (about 1.5° to 2.5°) upper slope in the central and northern parts of the map area. South of Point San Luis in San Luis Bay (sheets 5, 6), deltaic deposits offshore of the mouth of the Santa Maria River (11 km south of the map area) have prograded across the shelf break and now form a continuous low-angle (about 0.8°) ramp that extends to water depths of more than 160 m. The shelf break defines the landward boundary of slope deposits (Qmsl). North of Estero Bay, the shelf break is characterized by a distinctly sharp slope break that is mapped as a landslide headscarp above landslide deposits (Qls) (sheets 1, 2). Multibeam imagery and seismic-reflection profiles across this part of the shelf break show evidence of slope failure, such as slumping, sliding, and soft-sediment deformation, along the entire length of the scarp. Notably, this shelf-break scarp corresponds to a west splay of the Hosgri Fault that dies out just north of the scarp, suggesting that faulting is controlling the location (and instability) of the shelf break in this area.
Lithologies of Tertiary and older seafloor bedrock units were determined on the basis of seafloor samples where available; otherwise, they were interpreted on the basis of their correlation to onshore geology, using their seafloor texture visible in multibeam imagery in addition to their magnetic character. Tertiary units mapped in the offshore include rocks of the Obispo, Monterey, and Pismo Formations. The rhythmically bedded Monterey and Pismo Formations are characterized by their distinctive seafloor texture in multibeam imagery; in addition, they are relatively nonmagnetic. These rocks are underlain by, or are in fault contact with, Jurassic and Cretaceous basement that consists of rocks of either the two unnamed sandstone units (Ksl, Kslc), an unnamed graywacke unit (KJug), the Franciscan Complex (KJf), or the Coast Range ophiolite (Jo). These older units often are characterized by irregular, lumpy seafloor texture and complex magnetic signatures, owing to the highly deformed nature of the variably magnetic rocks.
Certain Mesozoic and Tertiary basement rocks, including ultramafic rocks of the Coast Range ophiolite (Jo) and diabase and basalts of the Obispo Formation (Tod), are highly magnetic, making high-resolution magnetic data (fig. 3 on sheets 2, 4, 6) an important mapping tool. Although metavolcanic rocks within the Franciscan Complex in this map area apparently are not magnetic, serpentinite is. Serpentinite, which is derived from the Coast Range ophiolite and is associated with the Franciscan Complex, commonly forms elongate magnetic bodies along fault zones and, thus, can assist in fault mapping.
This map area, which encompasses part of the Los Osos structural domain, lies on the east flank of the offshore Santa Maria Basin (McCulloch, 1987; Lettis and others, 2004), within the broader Pacific–North American plate transform margin. The Los Osos domain is characterized by a series of onshore, northwest-trending, fault-bounded basins and ranges that extend offshore, where they are partly covered by marine sediment and are truncated by the northwest-striking, right-lateral Hosgri Fault. The Hosgri Fault is an approximately 170-km-long (or longer?) right-lateral strike-slip fault (Petersen and others, 2008) that has an inferred Quaternary slip rate of 1 to 3 mm/yr (Hanson and Lettis, 1994; Hanson and others, 2004).
The shallow (upper 200 m) structure of the Hosgri Fault, as revealed in high-resolution seismic-reflection data, is a vertical fault zone that offsets the seafloor in numerous locations and that has many bends in strike that result in localized areas of uplift and subsidence. The map on sheet 1 shows the Hosgri Fault as being continuous with the onshore San Simeon Fault, and interpretation of high-resolution seismic-reflection data (tracklines shown in fig. 2 on sheet 2) provides compelling evidence that this is the case (Johnson and Watt, 2012). This interpretation contrasts with previous interpretations (Pacific Gas and Electric Company, 1988; Lettis and others, 1990; Hanson and others, 2004) that showed the Hosgri Fault as ending just north of Point Estero, with slip transferring to the San Simeon Fault through a releasing right step. Note that previous interpretations considered the stepover and associated pull-apart basin to be a barrier to earthquake rupture, and so our detailed mapping indicating that no Hosgri–to–San Simeon stepover exists has important implications for earthquake hazards (for a more detailed discussion, see Johnson and Watt, 2012).
Both the Los Osos and Shoreline Faults, which converge with the Hosgri Fault within the map area, are part of a broader fault system within the central Coast Ranges. The Los Osos Fault, as imaged with multibeam and high-resolution seismic-reflection data, forms a west-northwest-striking zone (1 to 3 km wide) of near-vertical faulting. Three distinct strands (north, central, and south) are evident on shallow seismic-reflection profiles. The Shoreline Fault, first recognized as a northwest-striking, vertical zone of earthquake hypocenters that parallels the coastline (Hardebeck, 2010), is expressed on the seafloor as a series of discontinuous, en echelon lineations and scarps visible in multibeam imagery. Detailed marine and airborne (helicopter) magnetic data also reveal a linear trend of magnetic anomalies, the edges of which are coincident with (or parallel to) the surface expression of the Shoreline Fault.
Reference cited:
Cacchione, D.A., Drake, D.E., Grant, W.D., and Tate, G.B., 1984. Rippled scour depressions of the inner continental shelf off central California: Journal of Sedimentary Petrology, v 54, p. 1280-1291.
Gornitz, V., 2009, Sea level change, post-glacial, in Gornitz, V., ed., Encyclopedia of paleoclimatology and ancient environments: Springer, Encyclopedia of Earth Sciences Series, p. 887–893.
Hanson, K.L., Lettis, W.R., 1994, Estimated Pleistocene slip rate for the San Simeon fault zone, south-central coastal California, in Seismotectonics of the Central California Coast Ranges, Alterman, I.B., McMullen, R.B., Cluff, L.S., and Slemmons, D.B. (Eds.): Geological Society of America Special Paper 292, p. 133-150.
Hanson, K.L., Lettis, W.R., McLaren, M.K., Savage, W.U., and Hall, N.T., 2004, Style and rate of quaternary deformation of the Hosgri fault zone, offshore south-central California, in Evolution of sedimentary basins/offshore oil and gas investigations- Santa Maria Province, Keller, M.A. (Ed.): U.S. Geological Survey Bulletin 1995-BB, 37 p.
Hardebeck, J.L., 2010, Seismotectonics and fault structure of the California Central Coast: Bulletin of the Seismological Society of America, v. 100, p. 1031-1050.
Johnson, S.Y., and Watt, J.T., 2012, Influence of fault trend, bends, and convergence on shallow structure and geomorphology of the Hosgri strike-slip fault, offshore central California: Geosphere, v. 8, no. 6, 25 p.
Lambeck, K., and Chappell, J., 2001, Sea level change through the last glacial cycle: Science, v. 292, p. 679–686, doi: 10.1126/science.1059549.
Langenheim, V.E., R.C. Jachens, and K. Moussaoui (2009). Aeromagnetic survey map of the central California Coast Ranges, USGS Open File Rept. 2009-1044, <https://pubs.usgs.gov/of/2009/1044/>.
Lettis, W.R., Hanson, K.L., Unruh, J.R., McLaren, M., and Savage, W.U., 2004, Quaternary tectonic setting of South-Central Coastal California: in, Evolution of sedimentary basins/offshore oil and gas investigations-Santa Maria Province, Keller, M.A. (Ed.): U.S. Geological Survey Bulletin 1995-AA, 24 p.
McCulloch, D.S., 1987, Regional geology and hydrocarbon potential of offshore central California, in Scholl, D.W., Grantz, A., and Vedder, J.G., eds., Geology and Resource Potential of the Continental Margin of Western North America and Adjacent Oceans -- Beaufort Sea to Baja California: Houston, Texas, Circum-Pacific Council for Energy and Mineral Resources, Earth Science Series, v. 6., p. 353-401.
Pacific Gas and Electric Company, 2011, Report on the analysis of the Shoreline Fault Zone, central coastal California, Report to the U.S. Nuclear Regulatory Commission, <http://www.pge.com/myhome/edusafety/systemworks/dcpp/shorelinereport/>.
Petersen, M.D., Frankel, A.D., Harmsen, S.C., Mueller, C.S., Haller, K.M., Wheeler, R.L., Wesson, R.L., Zeng, ., Boyd, O.S., Perkins, D.M., Luco, N., Field, E.H., Wills, C.J., and Rukstales, K.S., 2008, Documentation for the 2008 update of the United States National Seismic Hazard Maps: U.S. Geological Survey Open-File Report 2008-1128, 61 p.
Reid, J.A., Reid, J.M., Jenkins, C.J., Zimmerman, M., Williams, S.J., and Field, M.E., 2006, usSEABED: Pacific Coast (California Oregon, Washington) offshore surficial-sediment data release: U.S. Geological Survey Data Series 182, <https://pubs.usgs.gov/ds/2006/182/>.
Sliter, R.W., Triezenberg, P.J., Hart, P.E., Watt, J.T., Johnson, S.Y., and Scheirer, D.S., 2009, High resolution seismic-reflection and marine magnetic data along the Hosgri fault zone, central California: U.S. Geological Survey 2009-1100, v. 1.1, <https://pubs.usgs.gov/of/2009/1100/>.
Trembanis, A.C., and Hume, T.M., 2011, Sorted bedforms on the inner shelf off northeastern New Zealand—Spatiotemporal relationships and potential paleo-environmental implications: Geo-Marine Letters, v. 31, p. 203–214.
Purpose:
These data are intended for science researchers, students, policy makers, and the general public. These data can be used with geographic information systems or other software to aid in assessments and mitigation of geologic hazards in the central California coastal region and to provide sufficient geologic information for land-use and land-management decisions both onshore and offshore.
Supplemental_Information:
Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
Although this Federal Geographic Data Committee-compliant metadata file is intended to document the data set in nonproprietary form, as well as in ArcInfo format, this metadata file may include some ArcInfo-specific terminology.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2015
Currentness_Reference: Publication Date
Status:
Progress: Complete
Maintenance_and_Update_Frequency: none planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -120.998130
East_Bounding_Coordinate: -120.613617
North_Bounding_Coordinate: 35.291089
South_Bounding_Coordinate: 35.072024
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: seafloor
Theme_Keyword: geology
Theme:
Theme_Keyword_Thesaurus: Global Change Master Directory (GCMD)
Theme_Keyword: Oceans > Bathymetry/SeafloorTopography > Bathymetry
Theme_Keyword: Oceans > Bathymetry/SeafloorTopography > Seafloor Topography
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: geoscientificinformation
Theme_Keyword: environment
Theme_Keyword: oceans
Theme_Keyword: imageryBaseMapsEarthCover
Place:
Place_Keyword_Thesaurus: Geographic Names Information System (GNIS)
Place_Keyword: Pacific Ocean
Place_Keyword: California
Place_Keyword: San Simeon
Place_Keyword: Point Piedras Blancas
Place_Keyword: Pismo Beach
Place_Keyword: Cambria
Place_Keyword: Cayucos
Place_Keyword: Estero Bay
Place_Keyword: Morro Bay
Place_Keyword: San Luis Obispo
Place_Keyword: Point San Luis

Access_Constraints:
If physical samples or materials are available, constraints on their on-site access are described in "WR CMG Sample Distribution Policy" at URL: <http://walrus.wr.usgs.gov/infobank/programs/html/main/sample-dist-policy.html>
Use_Constraints:
This information is not intended for navigational purposes.
Read and fully comprehend the metadata prior to data use. Uses of these data should not violate the spatial resolution of the data. Where these data are used in combination with other data of different resolution, the resolution of the combined output will be limited by the lowest resolution of all the data.
Acknowledge the U.S. Geological Survey in products derived from these data. Share data products developed using these data with the U.S. Geological Survey.
This database has been approved for release and publication by the Director of the USGS. Although this database has been subjected to rigorous review and is substantially complete, the USGS reserves the right to revise the data pursuant to further analysis and review. Furthermore, it is released on condition that neither the USGS nor the United States Government may be held liable for any damages resulting from its authorized or unauthorized use.
Although this Federal Geographic Data Committee-compliant metadata file is intended to document these data in nonproprietary form, as well as in ArcInfo format, this metadata file may include some ArcInfo-specific terminology.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: USGS Pacific Coastal & Marine Science Center
Contact_Person: Janet Watt
Contact_Position: Geologist
Contact_Address:
Address_Type: physical address
Address: 400 Natural Bridges Drive
City: Santa Cruz
State_or_Province: CA
Postal_Code: 95060
Country: USA
Contact_Voice_Telephone: (831) 460-7565
Contact_Facsimile_Telephone: (831) 427-4748
Contact_Electronic_Mail_Address: jwatt@usgs.gov

Native_Data_Set_Environment:
Microsoft Windows Server 2008 R2 Version 6.1 (Build 7601) Service Pack 1?; ESRI ArcGIS 10.0.0.2800
Data_Quality_Information:
Logical_Consistency_Report:
Map elements were visually checked for overshoots, undershoots, duplicate features, polygon closure, and other errors by the lead authors and by the GIS technician(s) who created the digital database. Review drafts of the map were reviewed internally by at least two other geologists for consistency with basic geologic principles and general conformity to USGS mapping standards.
Completeness_Report:
Data are complete: no offshore features that could be accurately identified and represented at the compilation scale of 1:24,000 were eliminated or generalized. The smallest area represented is approximately 100 square meters. All geospatial database elements are attributed.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Polygons were primarily mapped by one of the following methods: (1) interpretation of 2-meter resolution hillshaded bathymetry data from bathymetric lidar and sonar surveys (see CSUMB 2010); (2) interpretation of 2-meter resolution amplitude (backscatter) data from bathymetric sonar surveys (see CSUMB 2010); (3) interpretation of 2-meter slope and curvature derivatives of bathymetry data and (4) interpretation of seismic reflection profile data.
Map Unit contact locations were interpreted typically at a scale of between 1:1,000 and 1:2,000 using the above base data. Bathymetric sonar and LiDAR data have a horizontal accuracy greater than the resolution of the base data, while seismic reflection data have a layback component, as well as error introduced by resolution and angle of intersection of mapped features. Consequently, the horizontal accuracy of mapped faults and folds is probably about 10 to 20 meters.
Most digitized positions on the map are estimated to have better than 5 m horizontal accuracy. There is no elevation data in the database.
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Geospatial_Data_Presentation_Form: raster digital data
Online_Linkage:
<http://seafloor.csumb.edu/SFMLwebDATA_c.htm#MORRO> <http://arcims.csumb.edu/DATA_DOWNLOAD/MorroBay.AvilaBay2009/CC_BlkF_2m.5m_bathygrids.zip>
Type_of_Source_Media: digital file of gridded elevation data (ArcInfo GRID)
Source_Time_Period_of_Content:
Time_Period_Information:
Multiple_Dates/Times:
Single_Date/Time:
Calendar_Date: 20090603
Single_Date/Time:
Calendar_Date: 20090604
Single_Date/Time:
Calendar_Date: 20090605
Single_Date/Time:
Calendar_Date: 20090606
Single_Date/Time:
Calendar_Date: 20090607
Single_Date/Time:
Calendar_Date: 20090608
Single_Date/Time:
Calendar_Date: 20090609
Single_Date/Time:
Calendar_Date: 20090610
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: CSUMB (2009)
Source_Contribution: Digital Elevation Model (2 meter resolution)
Source_Information:
Source_Citation:
Citation_Information:
Originator: Seafloor Mapping Lab, California State University Monterey Bay
Publication_Date: 20091231
Title: cc_bg_2mbthy
Geospatial_Data_Presentation_Form: raster digital data
Online_Linkage:
<http://seafloor.csumb.edu/SFMLwebDATA_c.htm#MORRO> <http://arcims.csumb.edu/DATA_DOWNLOAD/MorroBay.AvilaBay2009/CC_BlkG_2m.5m_bathygrids.zip>
Type_of_Source_Media: digital file of gridded elevation data (ArcInfo GRID)
Source_Time_Period_of_Content:
Time_Period_Information:
Multiple_Dates/Times:
Single_Date/Time:
Calendar_Date: 20090603
Single_Date/Time:
Calendar_Date: 20090604
Single_Date/Time:
Calendar_Date: 20090605
Single_Date/Time:
Calendar_Date: 20090606
Single_Date/Time:
Calendar_Date: 20090607
Single_Date/Time:
Calendar_Date: 20090608
Single_Date/Time:
Calendar_Date: 20090609
Single_Date/Time:
Calendar_Date: 20090610
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: CSUMB (2009)
Source_Contribution: Digital Elevation Model (2 meter resolution)
Source_Information:
Source_Citation:
Citation_Information:
Originator: Seafloor Mapping Lab, California State University Monterey Bay
Publication_Date: 20091231
Title: cc_bh_2mbthy
Geospatial_Data_Presentation_Form: raster digital data
Online_Linkage:
<http://seafloor.csumb.edu/SFMLwebDATA_c.htm#MORRO> <http://arcims.csumb.edu/DATA_DOWNLOAD/MorroBay.AvilaBay2009/CC_BlkH_2m.5m_bathygrids.zip>
Type_of_Source_Media: digital file of gridded elevation data (ArcInfo GRID)
Source_Time_Period_of_Content:
Time_Period_Information:
Multiple_Dates/Times:
Single_Date/Time:
Calendar_Date: 20090603
Single_Date/Time:
Calendar_Date: 20090604
Single_Date/Time:
Calendar_Date: 20090605
Single_Date/Time:
Calendar_Date: 20090606
Single_Date/Time:
Calendar_Date: 20090607
Single_Date/Time:
Calendar_Date: 20090608
Single_Date/Time:
Calendar_Date: 20090609
Single_Date/Time:
Calendar_Date: 20090610
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: CSUMB (2009)
Source_Contribution: Digital Elevation Model (2 meter resolution)
Source_Information:
Source_Citation:
Citation_Information:
Originator: Seafloor Mapping Lab, California State University Monterey Bay
Publication_Date: 20091231
Title: cc_bi_2mbthy
Geospatial_Data_Presentation_Form: raster digital data
Online_Linkage:
<http://seafloor.csumb.edu/SFMLwebDATA_c.htm#MORRO> <http://arcims.csumb.edu/DATA_DOWNLOAD/MorroBay.AvilaBay2009/CC_BlkI_2m.5m_bathygrids.zip>
Type_of_Source_Media: digital file of gridded elevation data (ArcInfo GRID)
Source_Time_Period_of_Content:
Time_Period_Information:
Multiple_Dates/Times:
Single_Date/Time:
Calendar_Date: 20090502
Single_Date/Time:
Calendar_Date: 20090503
Single_Date/Time:
Calendar_Date: 20090504
Single_Date/Time:
Calendar_Date: 20090505
Single_Date/Time:
Calendar_Date: 20090531

Single_Date/Time:
Calendar_Date: 20090601
Single_Date/Time:
Calendar_Date: 20090602
Single_Date/Time:
Calendar_Date: 20090603
Single_Date/Time:
Calendar_Date: 20090604
Single_Date/Time:
Calendar_Date: 20090605
Single_Date/Time:
Calendar_Date: 20090606
Single_Date/Time:
Calendar_Date: 20090607
Single_Date/Time:
Calendar_Date: 20090608
Single_Date/Time:
Calendar_Date: 20090609
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: CSUMB (2009)
Source_Contribution: Digital Elevation Model (2 meter resolution)
Source_Information:
Source_Citation:
Citation_Information:
Originator: Seafloor Mapping Lab, California State University Monterey Bay
Publication_Date: 20091231
Title: cc_bj_2mbthy
Geospatial_Data_Presentation_Form: raster digital data
Online_Linkage:
<http://seafloor.csumb.edu/SFMLwebDATA_c.htm#MORRO> <http://arcims.csumb.edu/DATA_DOWNLOAD/MorroBay.AvilaBay2009/CC_BlkJ_2m.5m_bathygrids.zip>
Type_of_Source_Media: digital file of gridded elevation data (ArcInfo GRID)
Source_Time_Period_of_Content:
Time_Period_Information:
Multiple_Dates/Times:
Single_Date/Time:
Calendar_Date: 20090502
Single_Date/Time:
Calendar_Date: 20090503
Single_Date/Time:
Calendar_Date: 20090504
Single_Date/Time:
Calendar_Date: 20090505
Single_Date/Time:
Calendar_Date: 20090531
Single_Date/Time:
Calendar_Date: 20090601
Single_Date/Time:
Calendar_Date: 20090602
Single_Date/Time:
Calendar_Date: 20090603
Single_Date/Time:
Calendar_Date: 20090604
Single_Date/Time:
Calendar_Date: 20090605
Single_Date/Time:
Calendar_Date: 20090606
Single_Date/Time:
Calendar_Date: 20090607
Single_Date/Time:
Calendar_Date: 20090608
Single_Date/Time:
Calendar_Date: 20090609
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: CSUMB (2009)
Source_Contribution: Digital Elevation Model (2 meter resolution)
Source_Information:
Source_Citation:
Citation_Information:
Originator:
Sliter, Ray W., Triezenberg, Peter J., Hart, Patrick E., Watt, Janet T., Johnson, Samuel Y., and Scheirer, Daniel S.,
Publication_Date: 2009
Title:
High-Resolution Seismic-Reflection and Marine Magnetic Data Along the Hosgri Fault Zone, Central California
Geospatial_Data_Presentation_Form: seismic reflection profile section
Series_Information:
Series_Name: U.S. Geological Survey Open-File Report
Issue_Identification: 2009-1100
Publication_Information:
Publication_Place: Menlo Park, CA
Publisher: U.S. Geological Survey
Online_Linkage: <https://pubs.usgs.gov/of/2009/1100/>
Type_of_Source_Media:
seismic data files (.sgy files) ASCII lat/long shotpoint files TIFF images of processed seismic lines
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20080610
Ending_Date: 20090808
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: Sliter and others, 2009
Source_Contribution:
Digital seismic data used to interpret subsurface geologic structure
Process_Step:
Process_Description:
Map Unit polygons were digitized over underlying 2-meter base layers developed from multibeam bathymetry and backscatter data. Derivatives such as slope and curvature were generated from source rasters. Interpreted rasters include amplitude, hillshaded bathymetry (using various illumination angles and vertical exaggeration), slope, and curvature. Curvature was decomposed into profile and plan curvature for analysis purposes.
Process_Date: 2009-2012
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains
Point_and_Vector_Object_Count: 555
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:

Map_Projection_Name: WGS 1984 UTM Zone 10N
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: 0.9996
Longitude_of_Central_Meridian: -123.0
Latitude_of_Projection_Origin: 0.0
False_Easting: 500000.0
False_Northing: 0.0
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.000100
Ordinate_Resolution: 0.000100
Planar_Distance_Units: Meter
Geodetic_Model:
Horizontal_Datum_Name: D WGS 1984
Ellipsoid_Name: WGS 1984
Semi-major_Axis: 6378137.0
Denominator_of_Flattening_Ratio: 298.257224
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: Geology
Entity_Type_Definition: Polygons representing geologic / geomorphic map units
Entity_Type_Definition_Source: This report
Attribute:
Attribute_Label: FID
Attribute_Definition: Internal feature number.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain:
Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label: Shape
Attribute_Definition: Feature geometry.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Coordinates defining the features.
Attribute:
Attribute_Label: MapUnitAbb
Attribute_Definition: Map Unit abbreviation
Attribute_Definition_Source: This report
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: af?
Enumerated_Domain_Value_Definition: Artificial fill (uncertain)
Enumerated_Domain_Value_Definition_Source: This report
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Jo
Enumerated_Domain_Value_Definition: Coast Range ophiolite
Enumerated_Domain_Value_Definition_Source: This report
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Jo?
Enumerated_Domain_Value_Definition: Coast Range ophiolite (uncertain)
Enumerated_Domain_Value_Definition_Source: This report
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: KJf
Enumerated_Domain_Value_Definition: Franciscan Complex
Enumerated_Domain_Value_Definition_Source: This report
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Kslc
Enumerated_Domain_Value_Definition: Unnamed sandstone and interbedded claystone
Enumerated_Domain_Value_Definition_Source: This report
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Qmc
Enumerated_Domain_Value_Definition: Marine channel deposits
Enumerated_Domain_Value_Definition_Source: This report
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Qmc?
Enumerated_Domain_Value_Definition: Marine channel deposits (uncertain)
Enumerated_Domain_Value_Definition_Source: This report
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Qmp?
Enumerated_Domain_Value_Definition: Marine pockmarks (uncertain)
Enumerated_Domain_Value_Definition_Source: This report
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Qmr
Enumerated_Domain_Value_Definition: Marine rill (uncertain)
Enumerated_Domain_Value_Definition_Source: This report
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Qms
Enumerated_Domain_Value_Definition: Marine nearshore and shelf deposits
Enumerated_Domain_Value_Definition_Source: This report
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Qms/Jo
Enumerated_Domain_Value_Definition:
Thin (0-4 m) ephemeral layer of marine sediment overlying Coast Range ophiolite
Enumerated_Domain_Value_Definition_Source: This report
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Qms/KJf
Enumerated_Domain_Value_Definition:
Thin (0-4 m) ephemeral layer of marine sediment overlying Franciscan Complex
Enumerated_Domain_Value_Definition_Source: This report
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Qms/Kslc
Enumerated_Domain_Value_Definition:
Thin (0-4 m) ephemeral layer of marine sediment overlying unnamed sandstone and interbedded claystone
Enumerated_Domain_Value_Definition_Source: This report
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Qms/Tm
Enumerated_Domain_Value_Definition:
Thin (0-4 m) ephemeral layer of marine sediment overlying Monterey Formation, undivided
Enumerated_Domain_Value_Definition_Source: This report
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Qms/To
Enumerated_Domain_Value_Definition:
Thin (0-4 m) ephemeral layer of marine sediment overlying Obispo Formation, undivided
Enumerated_Domain_Value_Definition_Source: This report
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Qmsf
Enumerated_Domain_Value_Definition: Fine-grained marine nearshore and shelf deposits
Enumerated_Domain_Value_Definition_Source: This report
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Qmsh
Enumerated_Domain_Value_Definition: Marine shelf hummocky deposits
Enumerated_Domain_Value_Definition_Source: This report
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Qmsl
Enumerated_Domain_Value_Definition: Marine slope deposits
Enumerated_Domain_Value_Definition_Source: This report
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Qmss
Enumerated_Domain_Value_Definition: Marine shelf sorted bedforms
Enumerated_Domain_Value_Definition_Source: This report
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Tm
Enumerated_Domain_Value_Definition: Monterey Formation, undivided
Enumerated_Domain_Value_Definition_Source: This report
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Tm?
Enumerated_Domain_Value_Definition: Monterey Formation, undivided (uncertain)
Enumerated_Domain_Value_Definition_Source: This report
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Tmpm
Enumerated_Domain_Value_Definition: Pismo Formation, Miguelito Member
Enumerated_Domain_Value_Definition_Source: This report
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Tmsch
Enumerated_Domain_Value_Definition: Monterey Formation, shale subunit
Enumerated_Domain_Value_Definition_Source: This report
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: To
Enumerated_Domain_Value_Definition: Obispo Formation, undivided
Enumerated_Domain_Value_Definition_Source: This report
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: To?
Enumerated_Domain_Value_Definition: Obispo Formation, undivided (uncertain)
Enumerated_Domain_Value_Definition_Source: This report
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Tod
Enumerated_Domain_Value_Definition: Obispo Formation, diabase and basalt subunit
Enumerated_Domain_Value_Definition_Source: This report
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Tor
Enumerated_Domain_Value_Definition: Obispo Formation, resistant tuff subunit
Enumerated_Domain_Value_Definition_Source: This report
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Tot
Enumerated_Domain_Value_Definition: Obispo Formation, vitric tuff subunit
Enumerated_Domain_Value_Definition_Source: This report
Attribute:
Attribute_Label: UnitType
Attribute_Definition:
short description of map unit (See Map Unit Abbreviation Definitions)
Attribute_Definition_Source: This report
Attribute_Domain_Values:
Unrepresentable_Domain: text description of map unit
Attribute:
Attribute_Label: Shape_Area
Attribute_Definition: Area of feature in internal units squared.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Positive real numbers that are automatically generated.
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey, Coastal and Marine Geology Program
Contact_Person: Janet Watt
Contact_Address:
Address_Type: mailing and physical address
Address: 400 Natural Bridges Drive
City: Santa Cruz
State_or_Province: CA
Postal_Code: 95060-5792
Country: US
Contact_Voice_Telephone: 831-460-7565
Contact_Facsimile_Telephone: 831-427-4748
Contact_Electronic_Mail_Address: jwatt@usgs.gov
Distribution_Liability:
This information is not intended for navigational purposes.
This database has been approved for release and publication by the Director of the USGS. Although this database has been subjected to rigorous review and is substantially complete, the USGS reserves the right to revise the data pursuant to further analysis and review. Furthermore, it is released on condition that neither the USGS nor the United States Government may be held liable for any damages resulting from its authorized or unauthorized use.
Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof.
Metadata_Reference_Information:
Metadata_Date: 201301
Metadata_Review_Date: 201201
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey, Coastal and Marine Geology Program
Contact_Person: Steve Hartwell
Contact_Address:
Address_Type: mailing and physical address
Address: 400 Natural Bridges Drive
City: Santa Cruz
State_or_Province: CA
Postal_Code: 95060-5792
Country: US
Contact_Voice_Telephone: 831-460-7814
Contact_Facsimile_Telephone: 831-427-4748
Contact_Electronic_Mail_Address: shartwell@usgs.gov
Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Generated by mp version 2.9.16 on Tue Apr 28 11:08:07 2015