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Showing 1 to 20 of 43 for “"Late Paleozoic"”.
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Late Paleozoic Bisaccate Pollen From the Midcontinent Area
Made available in DSpace on 2014-12-04T19:13:56Z (GMT). No. of bitstreams: 1 6003992.pdf: 4204603 bytes, checksum: 03bcd6eaeff51172904bed9ded345bbb (MD5) Previous issue date: 1960
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Mid- to Late-Paleozoic Deformation On Buck Mountain, Nevada
… at Buck Mountain are consistent with late-Paleozoic deformation and regional unconformities documented previously elsewhere in northern and central Nevada.Folds in the Morrowan-Atokan Ely Limestone are erosionally truncated and depositionally overlain by the mid-Desmoinesian Hogan …
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Paleogeothermal Conditions in the Illinois Basin During Late Paleozoic Coalification
… flow of hydrothermal fluids through the Upper Paleozoic Lower Paleozoic aquifers raised the temperature and caused an inflection(s) found in the paleogeotherms. The purpose of this dissertation was to; characterize the paleogeothermal architecture of the basin, through analysis of vitrinite …
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Biovolume and ecoguild analysis of Late Paleozoic Ice Age benthic communities.
The Late Paleozoic Ice Age (LPIA), spanning approximately 360-292 Mya, coincided with extinctions observed in the fossil record, and previous work has interpreted the glaciation as a period of sluggish faunal turnover with depressed rates of speciation. Such studies, however, have relied on …
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The record of carbon, oxygen, sulfur, and strontium isotopes and trace elements in late Paleozoic brachiopods
Embargo set by: Seth Robbins for item 104109 Lift date: 2019-11-30T21:03:43Z Reason: Electronic Theses and Dissertation
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Late Paleozoic Chronostratigraphy and Tectonostratigraphy of Pericratonic Terranes near Barkerville, British Columbia: Implications for the Lower Permian (Asselian) Sugar Limestone
… unit was likely deposited adjacent to an isolated carbonate platform in the Slide Mountain Ocean, prior to being thrust to its current location. This interpretation is based on the age and localized nature of the Sugar limestone unit, plus its proximity to klippen of the Slide Mountain …
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Tectonics of the lower Susquehhanna River region, southeastern Pennsylvania and northern Maryland: late proterozoic rifting to late paleozoic dextral transpression
… and these formations were juxtaposed during Late Paleozoic dextral strike-slip shearing. North of the shear zone, the Octoraro Formation contains evidence for two metamorphisms and deformations prior to strike-slip shearing, whereas south of the shear zone the Peters Creek Formation contains …
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Late Paleozoic basin analysis of the Loppa High and Finnmark Platform in the Norwegian Barents Sea : integration of seismic attributes and seismic sequence stratigraphy
… changing to warm-arid in the middle to late Carboniferous and finally to colder conditions in the late Permian. Such changes in paleolatitude and climate have resulted in major changes in the style of sedimentation including variations in the type of carbonate factories. The upper …
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Tectonics of the Wolf Creek Fault Zone, southern Illinois: A consequence of Late Paleozoic transpression and transtension at the southeastern end of the Ste. Genevieve Fault System
… that formation of the WCFZ took place in Late Mississippian/Early Pennsylvanian time (i.e., during the Late Paleozoic). In detail, the WCFZ can be divided into three distinct structural domains—in the Western Domain, normal faults trend NNW; in the Central Domain, pre-Caseyville strata are …
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Quantitative Analysis of Drilling Predation Patterns in the Fossil Record: Ecological and Evolutionary Implications
… To date, most of this research has been done on Late Mesozoic and Cenozoic deposits, and large-scale studies have focused on temporal rather than spatial patterns. However, drilling predation occurs throughout the entire Phanerozoic, and patterns in spatial variability may mask secular trends. …
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The age, stratigraphy, and tectonic provenance of clastic deposits in the western Bikou terrane, southwestern Qinling Mountains, China
… Mountains of central China are the product of Late Paleozoic to Triassic collision between the North China Plate and the South China Plate. Located within the southwestern Qinling Mountains is the Bikou terrane, a low grade metamorphic assemblage of igneous and clastic sedimentary rocks located …
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Morphology and Systematics of Cordaites of Pennsylvanian Coal Swamps of Euramerica
… extinct coniferophytic shrubs and trees of the Late Paleozoic. They were most prominent in tropical coal swamps existing from the Westphalian A-B boundary of Western Europe to the middle Desmoinesian (Westphalian D) of midcontinental United States. Structurally preserved coal-ball cordaites from …
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Regional Deformation and Dynamic Processes of the Southern Puna Plateau, Central Andes
The southern Puna Plateau of the central Andes offers an excellent opportunity to (1) advance our understanding in orogenic models for non-collisional mountain belts, (2) test Earth’s upper-crustal responses to lower lithospheric processes, and (3) explore uses of low-temperature thermochronology …
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NETWORK THEORY IN ICHNOLOGY: FROM BEHAVIOURAL TOPOLOGY TO THE DEPOSITIONAL ENVIRONMENT
… to global dynamics, with particular regard to Late Paleozoic fluvial-influenced settings. In this regard, the modern peritidal environments of the Grado lagoon (Italy, Adriatic Sea), the Nurra ichnosite (Permian-Triassic; Italy) and the Pramollo ichnolagerstätte (Carboniferous-Permian; Italy) …
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Investigating evidence of high frequency glacial eustacy in the Lower Mississippian (Tournasian) Lodgepole Formation of southwest Montana : insights from conodont oxygen isotopes
… evaluate the timing and initiation of the Late Paleozoic Ice Age (LPIA), and to better understand the carbon budget in response to cycle formation. δ18Oapatite trends across targeted cycles support the hypothesis of glacial eustatic origins along with cooling surface seawater temperatures. …
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Across- and along-strike structural and geochronological variations of the Nashoba-Putnam and Avalon terranes, eastern Massachusetts, Connecticut, and Rhode Island, southeastern New England Appalachians
… North America. These orogenies are the mid-Paleozoic Acadian orogeny and the late Paleozoic Alleghanian orogeny. The northeast-trending Nashoba-Putnam terrane, located in eastern Massachusetts and Connecticut is part of the Gondwanan-derived microcontinent Ganderia. It is in fault contact …
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Distribution of Platinum Group Elements in the New Afton Alkalic Cu-Au Porphyry Deposit, Kamloops, British Columbia
… within the Quesnel island arc terrane, a Late Paleozoic to Mesozoic arc complex that occupies the eastern part of the Intermontane Belt of the Canadian Cordillera. Bulk rock and sulfide minerals from New Afton contain potentially economic concentrations of platinum group elements (PGE). …
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Paleoenvironment and paleoclimate of NE Pangea in early Permian-linking chemo- and cyclo-stratigraphy, Bogda Mountains, NW China
… cycles (LCs: 1-10 Myr), and critical events of late Paleozoic ice age (LPIA: 320-260 Myr ago). Four organo-facies are one-to-one correlated with the four lithofacies in the meter-scale HCs, suggesting litho- and organo-facies are genetically linked and fundamentally controlled by environmental …
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