EGU2017-3875
... Zhangzhou basin located at the Southeast margins of Asian plate is one of the largest geothermal fields in Fujian province, Southeast China. High-temperature natural springs and granite rocks are widely distributed in this region and the causes of geothermal are speculated to be involved the large n ...
... Zhangzhou basin located at the Southeast margins of Asian plate is one of the largest geothermal fields in Fujian province, Southeast China. High-temperature natural springs and granite rocks are widely distributed in this region and the causes of geothermal are speculated to be involved the large n ...
PPT - nsf margins
... Q. What is the difference between “oceanic” and “non-oceanic” new crust? A.Thickness; density; magnetic anomalies; pattern of active deformation & volcanism. i.e., transitional crust B. Origin: crustal area formed by some process other than localized seafloor spreading; needs to be accounted for & ...
... Q. What is the difference between “oceanic” and “non-oceanic” new crust? A.Thickness; density; magnetic anomalies; pattern of active deformation & volcanism. i.e., transitional crust B. Origin: crustal area formed by some process other than localized seafloor spreading; needs to be accounted for & ...
The Australian North West Shelf
... with the creation of accommodation space, with sediment having been deposited directly onto exhumed continental lithospheric mantle (Figures 2 and 3). A striking feature of the NWS is that it contains an almost complete record of sedimentation throughout the entire Phanerozoic (Figure 5). This is du ...
... with the creation of accommodation space, with sediment having been deposited directly onto exhumed continental lithospheric mantle (Figures 2 and 3). A striking feature of the NWS is that it contains an almost complete record of sedimentation throughout the entire Phanerozoic (Figure 5). This is du ...
stratigraphy and tectonic evolution of the oil producing horizons of
... Sudan Interior Basins may have begun forming at this time. Previous wells and seismic data from the Sudan Interior Basins confirmed thick continental facies of Cretaceous and younger age. Control on geometry of deposition is poor, but numerous areas of low-lying basement hills probably supplied the ...
... Sudan Interior Basins may have begun forming at this time. Previous wells and seismic data from the Sudan Interior Basins confirmed thick continental facies of Cretaceous and younger age. Control on geometry of deposition is poor, but numerous areas of low-lying basement hills probably supplied the ...
Structural Features - Illinois State Geological Survey
... Structural geology examines how rock units are deformed after they are deposited or formed. In Illinois, nearly all of the rocks at or near the surface are sedimentary rocks that were originally laid down in more or less horizontal layers. Thus, any significant departure from the horizontal reflects ...
... Structural geology examines how rock units are deformed after they are deposited or formed. In Illinois, nearly all of the rocks at or near the surface are sedimentary rocks that were originally laid down in more or less horizontal layers. Thus, any significant departure from the horizontal reflects ...
Lower Mound Unit or Formation
... The recognition of cycles, and cycles within cycles, has now become quite an art form, and today it is done largely using reflection seismic sections, and is becoming increasingly divorced from direct connection with actual rocks. Individual bands in these images do not correlate to specific rock ty ...
... The recognition of cycles, and cycles within cycles, has now become quite an art form, and today it is done largely using reflection seismic sections, and is becoming increasingly divorced from direct connection with actual rocks. Individual bands in these images do not correlate to specific rock ty ...
Evidence of rain shadow in the geologic record
... Arid climates have been common and effected water resources throughout earth history. This climatic history provide a key to understanding current causes for desertification and a means to devise realistic strategies for coping with its effects. ...
... Arid climates have been common and effected water resources throughout earth history. This climatic history provide a key to understanding current causes for desertification and a means to devise realistic strategies for coping with its effects. ...
A short geologic history of the northeast United States
... deformation, metamorphism, and intrusion. The major Grenville orogenic period, ending about 950 million years ago, concluded the Precambrian. The eastern limit of the Grenville rocks is not known; it may have lain well to the east of what is now North America. The next major event seems to have been ...
... deformation, metamorphism, and intrusion. The major Grenville orogenic period, ending about 950 million years ago, concluded the Precambrian. The eastern limit of the Grenville rocks is not known; it may have lain well to the east of what is now North America. The next major event seems to have been ...
103-27bCoastalErosionalLandforms
... Sea stacks along a cliffed, rocky coastline (Victoria coast, Australia). Large waves from the Southern Ocean have eroded fractured sandstones into a series of headlands and isolated stacks (remnants of headlands). Although clearly vulnerable to wave erosion, such stacks survive for tens to hundreds ...
... Sea stacks along a cliffed, rocky coastline (Victoria coast, Australia). Large waves from the Southern Ocean have eroded fractured sandstones into a series of headlands and isolated stacks (remnants of headlands). Although clearly vulnerable to wave erosion, such stacks survive for tens to hundreds ...
Topic 10: GEOLOGY of SYDNEY REGION
... million years ago. The greatest mass extinction event in recorded geological history reset the botanical clock as well as causing extinction of up to 70% of land vertebrates and 96% of all marine life. The possible causes have generated much research, including at Wollongong University, but on balan ...
... million years ago. The greatest mass extinction event in recorded geological history reset the botanical clock as well as causing extinction of up to 70% of land vertebrates and 96% of all marine life. The possible causes have generated much research, including at Wollongong University, but on balan ...
Deep Sea Drilling Project Initial Reports Volume 60
... There are, however, definite differences between midocean spreading and back-arc spreading, apparently controlled by the proximity of the subduction zone in the back-arc situation. The most prominent ones are contrasts in the clearness of magnetic lineations, heatflow-age relationship, depth-age rel ...
... There are, however, definite differences between midocean spreading and back-arc spreading, apparently controlled by the proximity of the subduction zone in the back-arc situation. The most prominent ones are contrasts in the clearness of magnetic lineations, heatflow-age relationship, depth-age rel ...
Syseca normal blank template - Manchester Geological Association
... Arfon Basin (490 Ma) and folding in the Monian Supergroup attest to tectonism analogous to Penobscottian accretionary events on the Gander margin of the northern Appalachians. Renewed subsidence recorded in the Ordovician record of the Welsh Basin is interrupted by intrabasinal uplift during Sandbia ...
... Arfon Basin (490 Ma) and folding in the Monian Supergroup attest to tectonism analogous to Penobscottian accretionary events on the Gander margin of the northern Appalachians. Renewed subsidence recorded in the Ordovician record of the Welsh Basin is interrupted by intrabasinal uplift during Sandbia ...
Chapter 1 - Springer
... areal arrangement of the Alpine terranes, in the deep structure of the Alps, and in the different ages of metamorphism (see Schmid et al., this publ., for a review). For example, the eastern Alps are largely made up of tectonic units derived from Apulia, the Austroalpine nappes, while the western Al ...
... areal arrangement of the Alpine terranes, in the deep structure of the Alps, and in the different ages of metamorphism (see Schmid et al., this publ., for a review). For example, the eastern Alps are largely made up of tectonic units derived from Apulia, the Austroalpine nappes, while the western Al ...
Oblique basin inversion and strain partitioning in back
... systems) and MARLBORO-2 (single channel Sparker source) surveys. The pre-Messinian deformation and the geometry of the Messinian Erosional Surface (MES) and Plio-Quaternary deposits in the deep basin, developed during a regional extensional back-arc setting, evidence late Miocene to Quaternary foldi ...
... systems) and MARLBORO-2 (single channel Sparker source) surveys. The pre-Messinian deformation and the geometry of the Messinian Erosional Surface (MES) and Plio-Quaternary deposits in the deep basin, developed during a regional extensional back-arc setting, evidence late Miocene to Quaternary foldi ...
The Marine Environment
... of them is covered by the water. – Continental margins are the submerged parts of continents. • The continental margin is made of the continental shelf, continental slope, and continental rise. ...
... of them is covered by the water. – Continental margins are the submerged parts of continents. • The continental margin is made of the continental shelf, continental slope, and continental rise. ...
Geologic History of Chapel Hill
... geologists think the coastal plain sedimentary cover once extended inland to about Burlington, but if so, subsequent erosion washed that cover from the Chapel Hill area. The farthest inland extent of Coastal Plain sediments today is eastern and southern Wake County and near Sanford. These sediments ...
... geologists think the coastal plain sedimentary cover once extended inland to about Burlington, but if so, subsequent erosion washed that cover from the Chapel Hill area. The farthest inland extent of Coastal Plain sediments today is eastern and southern Wake County and near Sanford. These sediments ...
Tectonics & Sedimentation
... margins, alternatively an intracratonic basin will form Rift basins consist of a graben or half-graben separated from surrounding horsts by normal faults; they can be filled with both continental and marine deposits Intracratonic basins develop when rifting ceases, which leads to lithospheric coolin ...
... margins, alternatively an intracratonic basin will form Rift basins consist of a graben or half-graben separated from surrounding horsts by normal faults; they can be filled with both continental and marine deposits Intracratonic basins develop when rifting ceases, which leads to lithospheric coolin ...
On the post-25 Ma geodynamic evolution of the western
... 300 km of shortening is the maximum possible. In the Gibraltar area, according to plate-kinematics models of the relative motion of Europe and Africa (Dewey et al., 1989; Albarello et al., 1995; Campan, 1995), the amount of shortening since the Early Oligocene (Anomaly 13) must be less than 150 km. ...
... 300 km of shortening is the maximum possible. In the Gibraltar area, according to plate-kinematics models of the relative motion of Europe and Africa (Dewey et al., 1989; Albarello et al., 1995; Campan, 1995), the amount of shortening since the Early Oligocene (Anomaly 13) must be less than 150 km. ...
Slide 1 - Linn-Benton Community College
... Continental arcs & island arcs Mantle plumes (hot spots) [J. Tuzo Wilson] ...
... Continental arcs & island arcs Mantle plumes (hot spots) [J. Tuzo Wilson] ...
Gouiza et al - NSERC
... and metamorphosed Archean and Paleoproterozoic rocks of the Hearne and Rae Provinces host unconformity-type uranium deposits which are spatially associated with faults that cut the unconformity between the unmetametamorphosed basin-fill sedimentary rocks and the underlying metamorphic basement rocks ...
... and metamorphosed Archean and Paleoproterozoic rocks of the Hearne and Rae Provinces host unconformity-type uranium deposits which are spatially associated with faults that cut the unconformity between the unmetametamorphosed basin-fill sedimentary rocks and the underlying metamorphic basement rocks ...
fieldwork, Turkey
... subaerial exposure. No further marine sedimentation occurred in the basin after the Late Eocene. In contrast, the Hekimhan Basin continued to deposit sediments until it became emergent in the Middle Miocene. Project proposal The basins studied here are part of a continent-wide system of basins invol ...
... subaerial exposure. No further marine sedimentation occurred in the basin after the Late Eocene. In contrast, the Hekimhan Basin continued to deposit sediments until it became emergent in the Middle Miocene. Project proposal The basins studied here are part of a continent-wide system of basins invol ...
The Mediterranean region—a geological primer
... considered collectively as the result of an "Alpine" orogeny, when instead they are the result of diverse tectonic events spanning some 250 Ma, from the late Triassic to the Quaternary. To further complicate the picture, throughout the prolonged history of convergence between the two plates, new oce ...
... considered collectively as the result of an "Alpine" orogeny, when instead they are the result of diverse tectonic events spanning some 250 Ma, from the late Triassic to the Quaternary. To further complicate the picture, throughout the prolonged history of convergence between the two plates, new oce ...
Appendix S1
... South Africa Mediterranean climate vegetation prevails over most of the Cape Floristic Region, situated at the south-western tip of Africa, and covers an area of approximately 90,000 km2. The climate is strictly Mediterranean in the west, but receives substantial summer precipitation in the eastern ...
... South Africa Mediterranean climate vegetation prevails over most of the Cape Floristic Region, situated at the south-western tip of Africa, and covers an area of approximately 90,000 km2. The climate is strictly Mediterranean in the west, but receives substantial summer precipitation in the eastern ...
Messinian salinity crisis
The Messinian Salinity Crisis (MSC), also referred to as the Messinian Event, and in its latest stage as the Lago Mare event, was a geological event during which the Mediterranean Sea went into a cycle of partly or nearly complete desiccation throughout the latter part of the Messinian age of the Miocene epoch, from 5.96 to 5.33 Ma (million years ago). It ended with the Zanclean flood, when the Atlantic reclaimed the basin.Sediment samples from below the deep seafloor of the Mediterranean Sea, which include evaporite minerals, soils, and fossil plants, show that, about 5.96 million years ago in the late Miocene period, the precursor of the Strait of Gibraltar closed tight and the Mediterranean Sea, for the first time and then repeatedly, partially desiccated. The strait closed 5.6 Ma for the last time and, because of the generally dry climate conditions, within a millennium the Mediterranean basin nearly completely dried out, evaporating into a deep dry basin bottoming at some places 3 to 5 km (1.9 to 3.1 mi) below the world ocean level, with a few hypersaline Dead Sea-like pockets. Around 5.5 Ma, less dry climatic conditions allowed the basin to resume receiving more fresh water from rivers, with pockets of Caspian-like brackish waters getting progressively less hyper-saline, until the Strait of Gibraltar finally reopened 5.33 Ma with the Zanclean flood.Even now the Mediterranean is saltier than the North Atlantic because of its near isolation by the Strait of Gibraltar and its high rate of evaporation. If the Strait of Gibraltar closes again, which is likely to happen in the near geological future (though extremely distantly on a human time scale), the Mediterranean would mostly evaporate in about a thousand years. After that, continued northward movement of Africa may obliterate the Mediterranean: see Mediterranean Ridge.