Document Details


Title:
MAP, GEOLOGY OF JOYITA HILLS, LOS PINOS MOUNTAINS, AND CHUPADERA MESA NEW MEXICO SCALE 1 INCH = 1 MILE
Subject Terms:
MAPS; TRINITY EVENT; GEOGRAPHICAL VARIATIONS; ENERGY
Document Location:
Location - DOE/NNSA NUCLEAR TESTING ARCHIVE Address - P.O. Box 98521 City - Las Vegas State - NV Zip - 89193-8521 Phone - (702)794-5106 Fax - (702)862-4240 Email - NTA@NV.DOE.GOV
Document Type:
OTHER
Document Type Other:
DATA
Publication Date:
1946 Dec 31
Declassification Status:
Never classified
Document Pages:
0001
Accession Number:
NV0007262
Originating Research Org.:
UNITED STATES DEPARTMENT OF THE INTERIOR
OpenNet Entry Date:
1994 Aug 26
OpenNet Modified Date:
2003 Sep 18
Description/Abstract:
THIS REPORT IS A RESULT OF STRATIGRAPHIC STUDIES AND GEOLOGIC MAPPING IN 1944 AND 1945 BY THE U. S. GEOLOGICAL SURVEY, IN COOPARATION WITH T HE NEW MEXICO BUREAU OF MINES AND MINERAL RESOURCES. IT IS HOPED THAT THE REPORT WILL CONTRIBUTE TO GEOLOGICAL KNOWLEDGE OF NEW MEXICO AND BE OF GENERAL USE TO THE PETROLEUM AND MINING GEOLOGIST. A BRIEF SUMM ARY OF THE CONCLUSIONS FOLLOWS. THE LA JOYA AREA INCLUDES A PART OF THE BROAD RIO GRANDE VALLEY, THE J OYITA HILLS, AND COMPLEXLY FAULTED ZONE 7 TO 8 MILES WIDE EASTWARD TO THE LOS PINOS MOUNTAINS. A POSITIVE ELEMENT OR PLATFORM THAT WAS ELEV ATED IN MIDDLE PENNSYLVANIAN TIME IS PRESENT IN THE JOYITA HILLS. ITS STRUCTURE IS THAT OF A COMPLEX HORST. THICKENING OF THE PALEOZOIC BEDS TO THE WEST, SOUTH AND EAST OF THE POSITIVE ELEMENT SUGGESTS POS SIBLE STRATIGRAPHIC-TRAP RELATIONS BENEATH THE SURFACE OF THE STRUCTUR ALLY DEPRESSED RIO GRANDE VALLEY. THE EFFECT OF FAULTING WITHIN THE V ALLEY AND ALONG ITS MARGINS ON RESULTING OIL ACCUMULATIONS IS UNKNOWN. THE LOS PINOS MOUNTAINS CONSIST OF A PRE-CAMBRIAN CORE OF IGNEOUS AND METAMORPHIC ROCKS. THIS CORE IS COVERED IN PART BY PENNSYLVANIAN STRA TA THAT DIP GENTLY TO THE SOUTH AND SOUTHEAST EXCEPT WHERE BROKEN BY F AULTS. A MAJOR NORMAL FAULT LIES AT THE WESTERN BASE OF THE MOUNTAINS . TWO REVERSE FAULTS ARE THE APPROXIMATE BOUNDARY OF THE EASTERN SIDE OF THE MOUNTAINS. MOVEMENT ON THE REVERSE FAULTS WAS FROM WEST T O EAST. A RECURRENCE OF MOVEMENT, BUT IN THE OPPOSITE DIRECTION, ON T HE WESTERN OF THE TWO REVERSE FAULTS INDICATES TWO PERIODS OF DIASTROP HISM: AN EARLY PERIOD OF COMPRESSION, AND A LATER PERIOD OF RELAXATION RESULTING IN NORMAL FAULTING. A SMALL PART OF THE MANZANO MOUNTAINS LYING TO THE NORTH OF THE LOS PINOS MOUNTAINS IS INCLUDED IN THE MAPPE D AREA. FROM THE LOS PINOS MOUNTAINS THE ROCKS DIP GENTLY TO THE EAST AND SOUT HEAST BENEATH THE GREAT TABLELAND, CHUPADERA MESA, WHICH IS SURFACED W ITH PERMIAN ROCKS. A BELT 6 TO 12 MILES WIDE OF VALLEYS AND LOW CUESTAS INTERVENES BETWEEN THE MOUNTAINS AND THE ESCARPMENT FORMING TH E WEST EDGE OF THE MESA. IT IS POSSIBLE THAT A BURIED MIDDLE PENNSYLVANIAN POSITIVE ELEMENT UND ERLIES CHUPADERA MESA. HOWEVER, ONLY GEOPHYSICAL EXPLORATION OR DRILL ING CAN PROVE ITS PRESENCE.


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