I. CONTENTS
	
FILES IN DIRECTORY:

SUBFOLDER: GRID_GRD

CVG-1.GRD		Calculated Vertical Gradient from Residual Magnetic Field block 1
MAG-1.GRD		Residual Magnetic Field block 1
DTM-1.GRD		Digital Terrain Model ALTG-ALTL block 1 (EGM96)
LASER-1.GRD	Laser altitude of bird block 1
RES400-1.GRD	Apparent Resistivity 400 Hz coplanar block 1
RES1800-1.GRD	Apparent Resistivity 1800 Hz coplanar block 1
RES8200-1.GRD	Apparent Resistivity 8200 Hz coplanar block 1
RES40k-1.GRD	Apparent Resistivity 40k Hz coplanar block 1
RES140k-1.GRD	Apparent Resistivity 140k Hz coplanar block 1
RES400-2.GRD	Apparent Resistivity 400 Hz coplanar block 2 and 3
RES1800-2.GRD	Apparent Resistivity 1800 Hz coplanar block 2 and 3
RES8200-2.GRD	Apparent Resistivity 8200 Hz coplanar block 2 and 3
RES40k-2.GRD	Apparent Resistivity 40k Hz coplanar block 2 and 3
RES140k-2.GRD		Apparent Resistivity 140k Hz coplanar block 2 and 3

COORDINATE SYSTEM:
HORIZONTAL:
Universal Transverse Mercator projection
Zone 6 North
North American Datum of 1983 (NAD83)


II. DISCLAIMERS

Although these data have been subjected to rigorous review and are substantially complete, the USGS reserves the right to revise the data pursuant to further analysis and review.  Furthermore, the data are 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 these data have been processed successfully on a computer system at the U.S. Geological Survey, no warranty, expressed or implied is made regarding the display or utility of the data on any other system, or for general or scientific purposes, nor shall the act of distribution constitute such warranty.  The U.S. Geological Survey shall not be held liable for improper or incorrect use of the data described and/or contained herein.

Although this information product, for the most part, is in the public domain, it also contains copyrighted materials as noted in the text. Permission to reproduce copyrighted items for other than personal use must be secured from the copyright owner.

Any use of trade, product or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.