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 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geologic Excursions in Southwestern North America written by Philip A. Pearthree and published by Geological Society of America. This book was released on 2019-09-23 with total page 562 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Over the course of his 43-year career, James C. Knox conducted seminal research on the geomorphology of the Driftless Area of southwestern Wisconsin. His research covered wide-ranging topics such as long-term land-scape evolution in the Driftless Area; responses of floods to climate change since the last glaciation; processes and timing of floodplain sediment deposition on both small streams and on the Mississippi River; impacts of European settlement on the landscape; and responses of stream systems to land-use changes. This volume pre-sents the state of knowledge of the physical geography and geology of this unglaciated region in the otherwise-glaciated Midwest with contributions written by Knox prior to his passing in 2012 and by numerous of his for-mer colleagues and graduate students"--
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:
Download or read book Geologic Excursions in Southwestern North America written by Philip A. Pearthree and published by . This book was released on 2019 with total page 553 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geologic Excursions Through the Sonoran Desert Region Arizona and Sonora written by George E. Gehrels and published by . This book was released on 1990 with total page 218 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 New Publications of the U S Geological Survey written by and published by . This book was released on 2000 with total page 646 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography of the Pacific to Arizona Crustal Experiment PACE written by and published by . This book was released on 1992 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Field Excursions from the 2021 GSA Section Meetings written by Joan Florsheim and published by Geological Society of America. This book was released on 2021-11-10 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geology Geochronology Geochemistry and Pb isotopic Compositions of Proterozoic Rocks Poachie Region West central Arizona written by Bruce Bryant and published by . This book was released on 2001 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Mojave Sonora Megashear Hypothesis written by Thomas Howard Anderson and published by Geological Society of America. This book was released on 2005-01-01 with total page 726 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Studies on the Mesozoic of Sonora and adjacent areas written by César Jacques-Ayala and published by Geological Society of America. This book was released on 1995-01-01 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Use of Palaeomagnetism and Rock Magnetism to Understand Volcanic Processes written by M.H. Ort and published by Geological Society of London. This book was released on 2015-04-09 with total page 283 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume provides a synopsis of current research on volcanic processes, as gained through the use of palaeomagnetic and rock magnetic techniques. Thermoremanent magnetization information provides a powerful means of deciphering thermal processes in volcanic deposits, including estimating the emplacement temperature of pyroclastic deposits, which allows us to understand better the rates of cooling during eruption and transport. Anisotropy of magnetic susceptibility and anisotropy of remanence are used primarily to investigate rock fabrics and to quantify flow dynamics in dykes, lava flows, and pyroclastic deposits, as well as identify vent locations. Rock-magnetic characteristics allow correlation of volcanic deposits, but also provide means to date volcanic deposits and to understand better their cooling history. Because lava flows are typically good recorders of past magnetic fields, data from them allow understanding of changes in geomagnetic field directions and intensity, providing clues on the origin of Earth’s magnetic field.
Download or read book Geology Underfoot in Central Nevada written by Richard L. Orndorff and published by Mountain Press Publishing. This book was released on 2001 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: Most people think of Nevada as a land of casinos and drive-in wedding chapels punctuating vast expanses of desolate desert. But at the heart of the Basin and Range province, the Silver State is also a geologist's playground, with great topographic relief
Download or read book Volcanology in New Mexico written by Larry S. Crumpler and published by New Mexico Museum of Natural History and Science. This book was released on 2001 with total page 155 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 U S Geological Survey Professional Paper written by and published by . This book was released on 2001 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
