DMU001
DESCRIPTION OF MAP UNITS
01
Heading1st
DAS2
DMU002
HISTORIC UNITS (1790 and younger)
01-01
Heading2nd
DMU003
f9d2
Pāhoehoe flow of Kupaianaha eruption of 1986
Pāhoehoe flow of Kūpaianaha eruption of 1986
Holocene
Basalt contains 3–5 percent olivine phenocrysts and microphenocrysts and less than 1 percent plagioclase phenocrysts and microphenocrysts
mafic-composition lava flows
certain
01-01-01
DMU1
246,173,205
DMU004
f9d3
‘A‘ā flow of Pu‘u ‘Ō‘ō eruption of 1984
01-01-02
242,135,183
DMU005
f9d4
‘A‘ā flow of Pu‘u ‘Ō‘ō eruption of 1983
01-01-03
248,193,217
DMU006
s9d5
Spatter deposits and cinder-fall deposits of 1977 eruption (Moore and others 1979)
Main vent is Pu‘ukia‘i flow found along southern boundary of mapped area. Lava was extruded along discontinuous fissure systems eventually localizing at two central vents (Pu‘ukia‘i and vent A). Lava contains 1–3 percent plagioclase phenocrysts
mafic-composition air-fall tephra
01-01-04-01
253,233,241
DMU007
f9d5
Extensive ‘a‘ā of 1977 eruption (Moore and others 1979)
01-01-04-02
DMU008
f9e4
Pāhoehoe flow of the eruption of 1968
Basalt contains 12 percent olivine phenocrysts and microphenocrysts and 7 percent plagioclase phenocrysts and microphenocrysts. Unit is found at the distal end of the northernmost 1984 Pu‘u ‘Ō‘ō ‘a‘ā
01-01-05
Marker Fill Symbol. Pattern: grid; 5 point horizontal separation; 5 point vertical separation. Marker: Esri Default Marker Unicode 35; 2.5 point size. RGB: 236,000,140.
DMU009
f9d6
Extensive ‘a‘ā of 1963 eruption (Moore and Koyanagi, 1969)
Lava was extruded along discontinuous fissure systems eventually. Basalt contains 1–5 percent olivine phenocrysts and microphenocrysts. Unit is partially buried by the southernmost 1984 Pu‘u ‘Ō‘ō ‘a‘ā
01-01-06
244,154,193
DMU010
s9d1
Spatter deposits of 1961 eruption (Richter and others, 1964)
Main vent and flow found near the eastern boundary of mapped area. Basalt contains 0–5 percent olivine phenocrysts and microphenocrysts
01-01-07-01
DMU011
f9d1
Extensive pāhoehoe of 1961 eruption (Richter and others, 1964)
01-01-07-02
DMU012
s9g1
Spatter deposits erupted about 1790
Lava was extruded along discontinuous fissure systems in the east-central part of the mapped area. Lava contains less than 1 percent olivine phenocrysts and microphenocrysts
01-01-08-01
DMU013
f9g1
Extensive pāhoehoe erupted about 1790
01-01-08-02
DMU014
UNITS 200-400 YEARS OLD
01-02
DMU015
f8d4
Extensive pāhoehoe flows
In the northern part of the map, flows underlie about 30 percent of mapped area. Source is the ‘Ailā‘au shield (Holcomb, 1987) at the eastern side of summit caldera of Kīlauea. Basalt contains variable amounts of olivine and plagioclase. Flow conta
01-02-01
254,208,158
DMU016
s8c1
Spatter deposits in the eastern part of the mapped area
Unit underlies Heiheiahulu pāhoehoe (f8g1) with no intervening soil. Deposits formed early stages of eruption that became centralized at Heiheiahulu. Basalt contains 4–8 percent olivine and 3–5 percent plagioclase phenocrysts
01-02-02-01
251,189,151
DMU017
f8c1
Limited pāhoehoe flows in the eastern part of the mapped area
01-02-02-02
DMU018
s8c2
Spatter deposits and cinder-fall deposits of Kaimu-Makena Homesteads
Flows extruded from cinder cone in southeastern part of mapped area. Basalt contains 3–7 percent olivine phenocrysts and less than 2–3 percent plagioclase phenocrysts
01-02-03-01
255,231,167
DMU019
f8c2
Pāhoehoe flows of Kaimu-Makena Homesteads
01-02-03-02
DMU020
s8d1
Spatter deposits and cinder-fall deposits of Kalapana
Unit found in southeastern part of mapped area. Basalt contains 3–5 percent plagioclase phenocrysts
01-02-04-01
253,185,019
DMU021
f8d1
‘A‘ā flow of Kalapana
01-02-04-02
DMU022
f8g1
Heiheiahulu spatter and flows at the southeastern boundary of the mapped area
Flows originate from a large shield complex just east of the mapped area. Basalt contains no phenocrysts of olivine or plagioclase. Oral Hawaiian legends suggest that Heiheiahulu erupted about 1750 (Stearns and Macdonald, 1946)
01-02-05
252,211,193
DMU023
s8g3
Spatter deposits in central parts of mapped area
Basalt contains less than 1 percent olivine and less than 1 percent plagioclase laths. This unit is overlain by Pu‘ukia‘i ‘a‘ā (f9d4)
01-02-06-01
255,228,184
DMU024
f8g3
Extensive pāhoehoe and limited ‘a‘ā in central parts of mapped area
01-02-06-02
DMU025
s8g4
Spatter deposits at south-southwestern boundary of mapped area
Lava extruded from spatter ramparts partially buried by 1977 flows. Basalt contains less than 1 percent olivine microphenocrysts and less than 1 percent plagioclase laths
01-02-07-01
DMU026
f8g4
Pāhoehoe flows at south-southwestern boundary of mapped area
01-02-07-02
DMU027
s8g5
Spatter deposits partially buried by 1984 Pu‘u ‘Ō‘ō ‘a‘ā, Kupaianaha pāhoehoe, and 1977 flows
Basalt contains 0–1 percent olivine microphenocrysts and less than 1 percent plagioclase laths. Microgabbroic xenoliths less than 1 cm in diameter occasionally found in hand sample
01-02-08-01
254,207,141
DMU028
f8g5
Limited pāhoehoe flows partially buried by 1984 Pu‘u ‘Ō‘ō ‘a‘ā, Kupaianaha pāhoehoe, and 1977 flows
01-02-08-02
DMU029
f8g6
Extensive pāhoehoe flows at northeastern margin of mapped area, north and east of 1961 flow
Basalt is aphyric
01-02-09
255,225,127
DMU030
f8g7
Pāhoehoe flow extruded from a ground crack in west-central part of mapped area
Areal distribution very limited in extent; unit found as two separate flow fields. Uprift segment is a pāhoehoe at eastern edge of the 1984 Pu‘u ‘Ō‘ō ‘a‘ā flows. The other segment is found between flow units f8d8 and f7g4 in the center of t
01-02-10
247,172,188
DMU031
s8g8
Spatter deposits in south-central part of mapped area
Areal distribution very limited in extent. The unit is found as kīpuka in 1790 (f9g1) deposits. Basalt contains 0–1 percent each of olivine and plagioclase phenocrysts
01-02-11-01
243,134,167
DMU032
f8g8
‘A‘ā in south-central part of mapped area
01-02-11-02
DMU033
s8d8
Spatter deposits extruded from spatter cone almost completely buried by 1984 Pu‘u ‘Ō‘ō ‘a‘ā
Basalt contains 1–2 percent plagioclase laths and rare olivine phenocrysts and microphenocrysts, all in a gray feldspathic groundmass
01-02-12-01
255,225,000
DMU034
f8d8
Pāhoehoe flows extruded from spatter cone almost completely buried by 1984 Pu‘u ‘Ō‘ō ‘a‘ā
01-02-12-02
DMU035
f8d9
Pāhoehoe flow at center of the mapped area, near distal end of 1977 flow
Basalt contains 1 percent olivine phenocrysts
01-02-13
249,170,143
DMU036
f8d10
Pāhoehoe flow near the western boundary of the mapped area between the 1983 and 1984 Pu‘u ‘Ō‘ō ‘a‘ā flows
Basalt contains 1–2 percent plagioclase phenocrysts
01-02-14
249,168,112
DMU037
f8d11
Pāhoehoe flow at western boundary of the mapped area between the 1986 Kupaianaha pāhoehoe and 1977 Pu‘ukia‘i ‘a‘ā flows
01-02-15
243,113,096
DMU038
UNITS 400-750 YEARS OLD
01-03
DMU039
f7g4
Pāhoehoe flow in central part of mapped area at distal end of 1984 Pu‘u ‘Ō‘ō ‘a‘ā
Basalt contains less than 1 percent olivine phenocrysts and 0–1 percent plagioclase phenocrysts
01-03-01
175,208,226
DMU040
s7d19
Spatter deposits and cinder-fall deposits extruded from cinder cone near western boundary of the mapped area between two lobes of 1984 Pu‘u ‘Ō‘ō ‘a‘ā
Basalt with 1–2 percent olivine phenocrysts and microphenocrysts and 2–3 percent plagioclase phenocrysts in a feldspathic, gray groundmass
01-03-02-01
239,237,134
DMU041
f7d19
Pāhoehoe flows extruded from cinder cone near western boundary of the mapped area between two lobes of 1984 Pu‘u ‘Ō‘ō ‘a‘ā
01-03-02-02
DMU042
s7d20
Spatter deposits near boundary of the 1984 Pu‘u ‘Ō‘ō ‘a‘ā and 1977 flow field
Basalt contains 1–3 percent plagioclase phenocrysts and less than 1 percent olivine phenocrysts and microphenocrysts
01-03-03-01
114,191,068
DMU043
f7d20
Pāhoehoe flow near boundary of the 1984 Pu‘u ‘Ō‘ō ‘a‘ā and 1977 flow field
01-03-03-02
DMU044
f7b1
Extensive ‘a‘ā and pāhoehoe flow
At northeastern part of mapped area. Basalt contains 10–20 percent olivine and less than 1 percent plagioclase phenocrysts
01-03-04
234,243,213
DMU045
f7c6
Pāhoehoe flow
At eastern edge of mapped area. Basalt contains 3–6 percent olivine phenocrysts
01-03-05
180,221,192
Marker Fill Symbol. Pattern: grid; 5 point horizontal separation; 5 point vertical separation. Marker: Esri Geometric Symbols Unicode 209; 2.5 point size. RGB: 000,174,239.
DMU046
s7d15
Spatter deposits surrounded by Heiheiahulu flows at the southeastern boundary of the mapped area
Basalt contains 3–5 percent olivine phenocrysts and 1–2 percent plagioclase phenocrysts and microphenocrysts
01-03-06
159,209,139
DMU047
f7b5
Pāhoehoe flow in east-central part of the mapped area
Basalt contains 10–15 percent olivine phenocrysts and microphenocrysts and less than 1 percent plagioclase phenocrysts
01-03-07
155,211,174
DMU048
f7d22
Basalt contains 1–2 percent olivine phenocrysts and microphenocrysts and less than 1 percent plagioclase phenocrysts
01-03-08
103,193,140
DMU049
f7c13
Extensive pāhoehoe flow in central part of the mapped area
Basalt contains 3–7 percent olivine phenocrysts and microphenocrysts and less than 1 percent plagioclase phenocrysts
01-03-09
206,230,193
DMU050
UNITS 750-1500 YEARS OLD
01-04
DMU051
f6g3
Minor spatter deposits, cinder-fall deposits, and pāhoehoe flows extruded from cinder cone in southwestern part of mapped area at the north edge of the 1977 Pu‘ukia‘i flow field
Basalt contains less than 1 percent plagioclase laths
01-04-01
174,224,232
DMU052
s6d14
Spatter deposits and cinder-fall deposits extruded from cinder cone southwest of 1961 flow
Basalt contains 2–4 percent olivine phenocrysts and less than 1 percent plagioclase laths
01-04-02-01
093,169,221
DMU053
f6d14
Pāhoehoe flows extruded from cinder cone southwest of 1961 flow
01-04-02-02
DMU054
s6g4
Spatter deposits and cinder-fall deposits extruded from spatter ramparts in south-central part of mapped area
Unit is a kīpuka within the larger 1977 flow field. Basalt contains less than 1 percent each of olivine and plagioclase phenocrysts
01-04-03-01
079,198,224
DMU055
f6g4
‘A‘ā flows extruded from spatter ramparts in south-central part of mapped area
01-04-03-02
DMU056
UNITS 1500-3000 YEARS OLD
01-05
DMU057
f5g2
‘A‘ā and pāhoehoe flows in southeastern part of mapped area south of the easternmost 1977 Pu‘ukia‘i flow field
Basalt contains less than 1 percent plagioclase and olivine phenocrysts
01-05-01
205,175,151