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Lithologic column of the “Arkoma” Drillhole and its relation to the Cajon Pass Deep Drillhole
Author(s) -
Silver Leon T.,
James Eric W.
Publication year - 1988
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/gl015i009p00945
Subject(s) - geology , lithology , seismology , fault (geology) , basement , petrology , geomorphology , archaeology , history
The 1795 m "Arkoma" Federal 1‐26 well, 48.5 m from the Cajon Pass Deep Drillhole (CPDDH), provides additional lithologic and structural data pertinent to that project. Basement surface was encountered 158 m deeper than in the CPDDH. Rock units correlate well between the holes; the offset persists to 1128 m. Below this depth both lithologic unit thicknesses and fault zones correlate between holes on subhorizontal projections. A combination of previously unrecognized high‐angle and low‐angle faults of several ages are required to explain the structures. Blind low angle faults may be regionally important.