Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 25 for “"suture zone"”.
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Tectonostratigraphy of the Shyok Suture Zone in Ladakh, NW India.
… of the major geological units in the Shyok suture zone, and also compiles tectonostratigraphic correlations with exposures in northern Pakistan to develop a tectonic reconstruction of the southern Eurasian margin in Jurassic-Paleocene time. Chapter Two presents U-Pb zircon dates that …
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AN IMBRICATE MID CRUSTAL SUTURE ZONE: THE MOJAVE-YAVAPAI PROVINCE BOUNDARY IN GRAND CANYON, ARIZONA
… plutons east and west of the Crystal shear zone support suturing based on different U-Pb-Hf isotopic characteristics across the shear zone. I interpret the nature of this boundary to be the existence of an Archean substrate which is sampled by plutons west of the shear zone. The overlapping …
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Proterozoic Farwell Mountain-Lester Mountain suture zone, northern Colorado : subduction flip and progressive assembly of arcs
… "Farwell Mountain–Lester Mountain suture zone," a broad, complex zone of deformation that may contain the oldest accretionary structures within Paleoproterozoic crust south of the Cheyenne belt. The proposed "suture zone" is mapped in the Park Range of northern Colorado as a …
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Proterozoic history of the Idaho Springs-Ralston shear zone: evidence for a widespread ca. 1.4 Ga orogenic event in central Colorado, The
The Idaho Springs-Ralston shear zone (IRSZ) is one of several Proterozoic NE-trending zones within the central-eastern Colorado Front Range. The zone is composed of multiple mylonitic strands of a few meters to several kilometers in width and is mapped from ~16 km NNW of Denver, CO to ~26 km to the …
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Paleoenvironmental and tectonic reconstruction of the lower Eocene Ghazij Formation and related units, Balochistan, Pakistan: Implication for India -Asia collision
… related units exposed along the transpressional suture zone of the western margin of the Indian plate preserve the oldest syntectonic deposits of initial India-Asia collision. Analysis of lithofacies, paleoflow directions, and sandstone petrography indicate that the process of deformation and …
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Geochemical Characterization of the Louann Salt, Puma Field, Green Canyon, Gulf of Mexico Basin – Using XRF and XRD
… in excess of four kilometers (~13,000 feet). Suture zones occur intermittently within the Louann Salt, formed by the collision of allochthonous evaporite layers. The mineralogy and geochemistry of the suture zones are currently understudied and can be hazardous during drilling operations, …
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Magnetic model studies of the New York--Alabama Lineament and other magnetic anomalies in West Virginia
… The models could not differentiate between suture zone (dipping) and transform zone (nearly vertical) origins.;Prominent alignments of residual highs and lows and magnetic anomaly terminations are present in the residual anomaly data. In the plateau, model studies show that disruptions of …
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Genomics of Butterflies
… mechanisms for speciation across central Texas suture zone. Finally, we obtain whole genome shotgun sequences of all 845 butterfly species recorded from the United States and Canada, and learn about the patterns of their speciation and rapid diversification, connecting them to possible molecular …
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Geochemistry, structure, and tectonic evolution of the Eldivan ophiolite, Ankara Melange, central Turkey
… collapsed the form the İzmir -Ankara-Erzincan suture zone (İAESZ) through continental block collision. Whole-rock and mineral geochemical evidence show supra-subduction zone tectonomagmatic affinity for the ophiolite, revealing this basin formed in the upper plate of an intra-oceanic subduction …
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Structure and geochronological constraints on the ductile deformation observed along the Gaoligong Shan and Chong Shan Shear Zones, Yunnan (China)
… area within the India-Eurasia collision zone, a region known as the Three Rivers area, and presents the first structural and geochronological data from several transects across two poorly documented linear metamorphic belts located in between the Sagaing fault and the Ailao Shan Shear …
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Receiver function study in northeast Tibet and adjacent boundaries
… The deepest Moho is found along the Kunlun Fault zone in the northern Tibetan plateau. We also observed the presence of a double Moho phase in this region which suggests that there may be an overlap of the Qaidam crust above the Kunlun crust. The crustal deformation is complex between the Kunlun …
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The metamorphic sheet and underlying volcanic rocks beneath the Semail ophiolite in the northern Oman mountains of Arabia
… magmas characteristic of continental rift zones and some ocean islands. Two types of tholeiites are recognised: a relative (to MORB) trace-element enriched "transitional" type which probably farmed in a transitional within-plate tectonic setting and a "depleted" type with the …
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Ambient seismic noise tomography of the southern United States and seismic inversion with dictionary learning using unsupervised machine learning.
… In Chapter 1, our goal is to identify the suture zone between the Gondwanan Suwannee terrane, adjacent terranes, and the Laurentian continental margin by developing an accurate shear wave velocity model. This helps improve our understanding of the lithology and formation of the southeastern …
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The tectonic evolution of the Southern Granulite Terrane of India and its role in the amalgamation of Gondwana.
… of a late Neoproterozoic (ca. 550 - 500 Ma) suture zone between the Salem and Madurai Blocks, termed the Palghat Cauvery ShearZone (or alternatively, the Cauvery Shear Zone). The U-Pb zircon geochronology of the orthopyroxene-bearing orthogneisses (charnockites) in the northern part of …
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Crustal velocity structure in the southern coast belt, British Columbia, from a seismic refraction survey
… America, and the subsequent overprinting of the suture zone bygranitic intrusions associated with east-dipping subduction. As part of the LITHOPROBE Southern Cordillera transect, seismic refraction data were recorded along a 350 km long strike profile in the Coast Belt. An iterative combination …
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Speciation Genomics in Australian Meliphagoid Birds
… populations. While sampling across hybrid zones provide insight for an intermediate stage of speciation, comparative studies of multiple contact zones between populations at different stages of speciation would expand our broader understanding of the process itself. Suture zones provide …
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Speciation Genomics in Australian Meliphagoid Birds
… populations. While sampling across hybrid zones provide insight for an intermediate stage of speciation, comparative studies of multiple contact zones between populations at different stages of speciation would expand our broader understanding of the process itself. Suture zones provide …
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Supercontinents and glaciation: a perspective from western Gondwana.
… into the Cambrian that are believed to mark the suture zone of the Clymene Ocean—interpreted amongst the youngest of the Gondwana amalgamation orogens. The post-orogenic São Vicente Granite provides a long sort after minimum age of 518 ± 4 Ma for orogenesis within the belt, constraining the …
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Kinematics and Dynamics of Continental Deformation
… first two studies look at the Makran subduction zone, and the third focusses on deformation in South East Tibet. The first study is an investigation of the 11 May 2013 M w 6.1 Minab earthquake which occurred at the western end of the Makran subduction zone, adjacent to the transition to …
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