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Carpenter, R. H.

Trexler, D. W.

English

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Produced by the NASA Center for Aerospace Information (CASI) 
https://ntrs.nasa.gov/search.jsp?R=19760014574 2020-03-22T15:02:19+00:00Z
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REMOTE SENSING IN MIN°^_"_- EXPLORATION FROM LANDSAT (ERTS) IMAGERY
Test Site No. 2 (Colorado)
R. H. Carpenter and D. W. Trexler
Department of Geology
Colorado School of Mines
Golden, CO 80401
(h76-10295)	 FEMOTS SENSING Ifi MINE'PAI
	 1'76-21662
FXPLOFAiICN FROM LANGSAT (EPrS) IMAGEFY.
TSST SITE NO. 2 (COLO'ADO)
	 Progress report,
31 Dec. 1975 - i l Mar. 1975 (Colorado Scnocl
	 Unclas
of Mines)	 7 F He $3. ^O
	 CSCL 08G 63/43 00295
April 1976
Type II Report for Period 31 December 1975 - 31 March 1976
Prepared for
GODDARD SPACE FLIGHT CENTER.
Greenbelt, Maryland 20771
I	 ,
Ek
i
REMOTE SENSING IN MINERAL EXPLORATION
FROM LANDSAT (ERTS) IMAGERY,
Test Site No. 2 (Colorado)
Contract No. NA0'5-20955
LANDSAT Investigation No. 22840
1 
I	
-
Problems - Communications and funding.
Accomplishments
1. Completion of a 930 item bibliography for the Colorado
Mineral Belt.
2. Annotation of photo-linears for a belt 40 - 80 miles wide
1
and 250 miles long paralleling the Colorado Mineral Belt
were mapped at a scale of 1:1,000,000 on positive transparen-
cies using a zoom stereoscope (fig. 1). These linears have
been transferred to 2-degree topographic maps (scale
1:250,000).
At the preser, time each linear is being classified
using published maps as follows:
a. Straight topolinears
(1) faults and shear zones
(2) joint control of stream segments
(3) foliation control of stream segments
(4) lithologic contacts
(5) vein system and dikes
(6) parallel drainage on consequent volcanic
surfaces
(7) glacial erosional and depositional fea-
tures
(8) unexplained photo linears
b. Curvilinears
An examp le of such a classification is shown at a scale
of 1:250,000 for the area surrounding Central City and
,"A
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4
Georgetown (fig. 2). Mineral districts within the are,
located.
Outline of work planned for the next reportincc period:
1. Complete the evaluation of photolinears.
2. Field check photolinears not explained with
published maps.
3. Evaluate linears with respect to known mineral
districts.
4. Using a color additive viewer evaluate LANDSAT
imagery to determine best scenes for computer
ratioing.
5. Field check selected mining districts to deter-
mine surface manifestations which might be
detected on LANDSAT imagery.
Significant Results
None to date.
Publica'^ijns
None.
Recommendations
Increase funding as requested in quarterly report (2)
of January 23, 1976.
Funds Ex pended to Date
$13,750.00
,1	
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Value of data allowed - ?
Value of data ordered - ?
Value of data received - All LANDSAT imagery re^eived.
(42 scenes of central and western Colorado)
Aircraft Data
None received to date.
Reference used in identification of linears
Lovering, T. S. and Goddard, E. N., ]950, Geology and
Ore Deposits of the Front Range, Colorado, USGS Prof.
Paper 223, geologic map ]:62,500.
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Mineral districts 	 {---- f Faults and shear zones
--T	 Joint controled stream
segments
T T Foliation controled
stream see--ment--
o	 1 0 	— Litholo^ic contacts
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— — — 'lein systems and dikes
^	 Glacial erosional and
— —• — Unexplained p! o y ol'_..^; .
Fig. 2. Linears mapped in the Central City - Georgetown area-


Remote sensing in mineral exploration from LANDSAT (ERTS) imagery. Test site no. 2 (Colorado)

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