Download or read book Geologic Setting and Interpretation of a Zone of Middle Tertiary Igneous metamorphic Complexes in South central Arizona written by Norman G. Banks and published by . This book was released on 1977 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cordilleran Metamorphic Core Complexes written by Max D. Crittenden and published by Geological Society of America. This book was released on 1980 with total page 497 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book New Publications of the Geological Survey written by Geological Survey (U.S.) and published by . This book was released on 1989 with total page 836 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Publications of the U S Geological Survey 1971 1981 written by and published by . This book was released on 1986 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Open file Report written by and published by . This book was released on with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geology of the Northern Part of the Harcuvar Complex West Central Arizona written by U.S. Department of the Interior and published by CreateSpace. This book was released on 2014-03-04 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: A belt of metamorphic core complexes crops out in southeastern California and west-central Arizona in the Basin and Range Province southwest of the margin of the Colorado Plateau (fig. 1). The complexes consist of crystalline rock (commonly mylonitized) below a low-angle detachment fault. Overlying the detachment fault are unmetamorphosed Tertiary sedimentary and volcanic rocks, metamorphosed Mesozoic and Paleozoic sedimentary and volcanic rocks, and Proterozoic and younger plutonic and metamorphic rocks lacking pervasive mylonitic structures. Crystalline rocks below detachment faults in the Rawhide, Buckskin, Little Buckskin, Harcuvar, Harquahala, Little Harquahala, and Granite Wash Mountains have been informally named the Harcuvar metamorphic core complex (Rehrig and Reynolds, 1980), or simply Harcuvar complex, because in some areas it contains unmetamorphosed igneous rocks.
Download or read book Bibliography and Index of Geology written by and published by . This book was released on 1992 with total page 1544 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Arizona Geological Society Digest written by Arizona Geological Society and published by . This book was released on 1989 with total page 916 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geologic Reconnaissance of a Part of Western Arizona written by Willis Thomas Lee and published by . This book was released on 1908 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Tectonic Setting of Faulted Tertiary Strata Associated with the Catalina Core Complex in Southern Arizona written by William R. Dickinson and published by Geological Society of America. This book was released on 1991 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mid-Tertiary strata exposed as tilted homoclines along the flanks of the San Pedro trough and across broad uplands north of the Catalina core complex are assigned to the following formations, each of which includes informal local members and facies: (a) Mineta Formation, mid-Oligocene redbeds including both conglomeratic fluvial and finer-grained lacustrine deposits; (b) Galiuro Volcanics, including lavas and domes, air-fall and ash-flow tuffs, and intercalated volcaniclastic strata of late Oligocene to earliest Miocene age; (c) Cloudburst Formation, also of late Oligocene and earliest Miocene age but including a sedimentary upper member of conglomeratic strata as well as a volcanic lower member correlative with part of the Galiuro Volcanics; and (d) San Manuel Formation, composed of lower Miocene alluvial fan and braidplain deposits that display contrasting clast assemblages in different areas of exposure. Generally correlative Oligocene-Miocene strata exposed south of the Catalina core complex are assigned to the Pantano Formation, which contains similar lithologic components. Less-deformed Neogene strata of post-mid-Miocene basin fill are assigned to the Quiburis Formation along the San Pedro trough, but stratigraphic equivalents elsewhere lack adequate nomenclature. High benchlands mantled by paleosols mark the highest levels of Neogene aggradation. Successive stages of subsequent erosional dissection are recorded by multiple terrace levels incised into basin fill. Key exposures of syntectonic mid-Tertiary sedimentary sequences in several local subareas reveal typical structural and stratigraphic relationships. Multiple fault blocks expose pre-Tertiary bedrock overlain by tilted mid-Tertiary strata confined to intervening half-grabens. Bounding syndepositional faults dip southwest and associated homoclines dip northeast. Fanning dips and buttress unconformities reflect progressive tilt and burial of eroding fault blocks. Dips of block-bounding faults are inversely proportional to the ages of the faults. Steeper dips for younger faults suggest either progressive erosion of successive listric faults or progressive rotation of successive planar faults. Uniformly moderate to steep dihedral angles between fault surfaces and offset homoclinal bedding imply that the faults dipped more steeply near the surface when syntectonic mid-Tertiary strata were subhorizontal. Although the inference of listric faulting best links apparent strands of the Catalina detachment system, the alternate interpretation of rotational normal faulting is compatible with local structural relationships including tilt of porphyry copper orebodies. Within the San Pedro trough, multiple homo clines of mid-Tertiary strata are exposed locally in tilt-blocks exhumed by Neogene erosion from beneath nearly flat-lying basin fill of the Quiburis Formation. Faults bounding the mid-Tertiary exposures include backtilted strands of the Catalina detachment system, somewhat younger listric or rotational normal faults, and steeper basin-range normal faults that display offsets both synthetic and antithetic to the flanks of the San Petro trough. In Cienega Gap, flanking the Tucson Basin, multiple tilt-blocks of the Pantano Formation form part of the upper plate of the Catalina detachment system. Initial construction of alluvial fans by generally westward paleoflow was followed by ponding of lacustrine environments along the foot of secondary breakaway scarps that also generated massive megabreccia deposits. In summary, syntectonic Oligocene to Miocene sedimentation succeeded a prominent pulse of polymodal mid-Tertiary volcanism and was coeval with mylonitic deformation and detachment faulting along the flank of the Catalina core complex. The headwall rupture for the detachment system migrated westward from an initial position along the range front of the Galiuro Mountains. After mid-Miocene time, accumulation and subsequent dissection of essentially undeformed basin fill was accompanied by basin-range block faulting. The most challenging structural issue is whether fault strands of the Catalina detachment system are interconnected or are disconnected rotational segments.
Download or read book Geologic Evolution of Arizona written by and published by . This book was released on 1989 with total page 880 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Arizona Geology written by and published by . This book was released on 1991 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Field Conference written by New Mexico Geological Society and published by . This book was released on 1984 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geology of Arizona written by Dale Nations and published by Kenndall/Hunt Publishing Company. This book was released on 1981 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geologic Excursions in Northern and Central Arizona written by Ernest M. Duebendorfer and published by . This book was released on 1998 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt:
