Normal faulting in the upper plate of a metamorphic core complex
... The northern Snake Range metamorphic core complex has been studied in depth and numerous competing models have been proposed for its formation and evolution (e.g., Wernicke, 1981; Miller and Gans, 1983; Lee, 1995). Most of these models have utilized relations in lower plate rocks beneath the norther ...
... The northern Snake Range metamorphic core complex has been studied in depth and numerous competing models have been proposed for its formation and evolution (e.g., Wernicke, 1981; Miller and Gans, 1983; Lee, 1995). Most of these models have utilized relations in lower plate rocks beneath the norther ...
20 Transform Plate Boundaries - North Coast Distance Education
... Transform plate boundaries in the ocean basins are prominent linear features that are perpendicular to the midocean ridges. They are the short, active parts of fracture zones that may be several kilometers wide and thousands of kilometers long. The characteristics of oceanic fracture zones depend on ...
... Transform plate boundaries in the ocean basins are prominent linear features that are perpendicular to the midocean ridges. They are the short, active parts of fracture zones that may be several kilometers wide and thousands of kilometers long. The characteristics of oceanic fracture zones depend on ...
Bulletin of the Geological Society of Denmark, Vol. 29/1-2, pp. 77-101
... The East Greenland continental margin can be divided into a northern area showing evidence for plate separation and sutiuing of Hudsonian, Grenvillian and Caledonian ages followed by post-Late Caledonian molasse sedimentation and Mesozoic rifting, and a southern area which apparently formed a craton ...
... The East Greenland continental margin can be divided into a northern area showing evidence for plate separation and sutiuing of Hudsonian, Grenvillian and Caledonian ages followed by post-Late Caledonian molasse sedimentation and Mesozoic rifting, and a southern area which apparently formed a craton ...
EDS011 - GeologyOntario
... settings for rocks of Mesoarchean to Cretaceous age varies widely in Ontario. The Tectonic Assemblages of Ontario map attempts to accommodate the diverse levels of confidence about our knowledge of different tectonic domains (tectonic provinces, orogens or basins) in Ontario, within a legend that i ...
... settings for rocks of Mesoarchean to Cretaceous age varies widely in Ontario. The Tectonic Assemblages of Ontario map attempts to accommodate the diverse levels of confidence about our knowledge of different tectonic domains (tectonic provinces, orogens or basins) in Ontario, within a legend that i ...
Crustal thickening in Gansu-Qinghai, lithospheric mantle subduction
... 1989; Ekström 1987; Chen et al. 1996) (Fig. 1) concur to indicate that these mountain ranges are still growing, to accommodate thickening of the crust. In the Qaidam basin, seismic profiles and borehole data suggest that thrust faulting and folding began after the Cretaceous, were most active in th ...
... 1989; Ekström 1987; Chen et al. 1996) (Fig. 1) concur to indicate that these mountain ranges are still growing, to accommodate thickening of the crust. In the Qaidam basin, seismic profiles and borehole data suggest that thrust faulting and folding began after the Cretaceous, were most active in th ...
DNR kettle dome fox
... Price (1980) attributed the gneiss domes to crustal-scale megaboudinage associated with lithospheric stretching. Fox and Beck (1985, p. 334) postulated that areas of relatively undeformed upper crustal rock between or alongside the gneiss domes are the megaboudins and that the gneiss domes are the d ...
... Price (1980) attributed the gneiss domes to crustal-scale megaboudinage associated with lithospheric stretching. Fox and Beck (1985, p. 334) postulated that areas of relatively undeformed upper crustal rock between or alongside the gneiss domes are the megaboudins and that the gneiss domes are the d ...
Geological Society of America Bulletin - UCLA
... Mountains detachment fault system in southeastern California provides an unusual opportunity to address these questions. Analysis of the stratigraphy and structures of upper-plate rock units constrains the three-dimensional kinematic evolution of the mid-Tertiary Whipple-Chemehuevi detachment fault ...
... Mountains detachment fault system in southeastern California provides an unusual opportunity to address these questions. Analysis of the stratigraphy and structures of upper-plate rock units constrains the three-dimensional kinematic evolution of the mid-Tertiary Whipple-Chemehuevi detachment fault ...
Tectonic Framework of Basin Evolution in Peru
... regional stress fields and their timing. Nowadays there is broad consensus that sedimentary basins form by reactivation of pre-existing weaknesses or structure within the brittle upper crust. The timing of the various stages of basin evolution is based on the major stratigraphic sequences and their ...
... regional stress fields and their timing. Nowadays there is broad consensus that sedimentary basins form by reactivation of pre-existing weaknesses or structure within the brittle upper crust. The timing of the various stages of basin evolution is based on the major stratigraphic sequences and their ...
Activity— Foam Faults - Cascadia Earthscope Earthquake and
... Use the block models to demonstrate normal faulting as the two outer blocks are moved apart as shown in Figure 1B. This procedure is best performed by holding the blocks “in the air” in front of you, supporting the model by the two outer blocks, rather than on a table. Note that as the two outer b ...
... Use the block models to demonstrate normal faulting as the two outer blocks are moved apart as shown in Figure 1B. This procedure is best performed by holding the blocks “in the air” in front of you, supporting the model by the two outer blocks, rather than on a table. Note that as the two outer b ...
Teaching About Plate Tectonics and Faulting Using Foam
... Use the block models to demonstrate normal faulting as the two outer blocks are moved apart as shown in Figure 1B. This procedure is best performed by holding the blocks “in the air” in front of you, supporting the model by the two outer blocks, rather than on a table. Note that as the two outer b ...
... Use the block models to demonstrate normal faulting as the two outer blocks are moved apart as shown in Figure 1B. This procedure is best performed by holding the blocks “in the air” in front of you, supporting the model by the two outer blocks, rather than on a table. Note that as the two outer b ...
STRIKE-SLIP AND OBLIQUE
... R Riedel shears are normally the first subsidiary fractures to occur and generally build the most prominent set. They develop at an acute angle, typically 10-20° clockwise to a dextral main fault, anticlockwise to a sinistral strike-slip fault. They often form an en échelon and overstepping array sy ...
... R Riedel shears are normally the first subsidiary fractures to occur and generally build the most prominent set. They develop at an acute angle, typically 10-20° clockwise to a dextral main fault, anticlockwise to a sinistral strike-slip fault. They often form an en échelon and overstepping array sy ...
Extensional Tectonics in the Basin and Range Province and the
... Research), and thanks are due to Kip Hodges and Bill Olszewski for their help. Chris Fridrich attempted to petrographically identify tuffs from the Eagle Mountain section for us, but the samples weren’t amenable. Field mapping in the Grapevine Mountains (Chapters 4–7) was a political, logistical, and ...
... Research), and thanks are due to Kip Hodges and Bill Olszewski for their help. Chris Fridrich attempted to petrographically identify tuffs from the Eagle Mountain section for us, but the samples weren’t amenable. Field mapping in the Grapevine Mountains (Chapters 4–7) was a political, logistical, and ...
Activity— Foam Faults - Cascadia Earthscope Earthquake and
... Use the block models to demonstrate normal faulting as the two outer blocks are moved apart as shown in Figure 1B. This procedure is best performed by holding the blocks “in the air” in front of you, supporting the model by the two outer blocks, rather than on a table. Note that as the two outer b ...
... Use the block models to demonstrate normal faulting as the two outer blocks are moved apart as shown in Figure 1B. This procedure is best performed by holding the blocks “in the air” in front of you, supporting the model by the two outer blocks, rather than on a table. Note that as the two outer b ...
Mineral Hunters Guide: Ruggles Mine Edition
... Sulfates also occur in hydrothermal vein systems as gangue minerals along with sulfide ore minerals. Another occurrence is as secondary oxidation products of original sulfide minerals. Common sulfates include anhydrite (calcium sulfate), celestine (strontium sulfate), barite (barium sulfate), and gy ...
... Sulfates also occur in hydrothermal vein systems as gangue minerals along with sulfide ore minerals. Another occurrence is as secondary oxidation products of original sulfide minerals. Common sulfates include anhydrite (calcium sulfate), celestine (strontium sulfate), barite (barium sulfate), and gy ...
Teaching About Plate Tectonics and Faulting Using Foam
... Use the block models to demonstrate normal faulting as the two outer blocks are moved apart as shown in Figure 1B. This procedure is best performed by holding the blocks “in the air” in front of you, supporting the model by the two outer blocks, rather than on a table. Note that as the two outer b ...
... Use the block models to demonstrate normal faulting as the two outer blocks are moved apart as shown in Figure 1B. This procedure is best performed by holding the blocks “in the air” in front of you, supporting the model by the two outer blocks, rather than on a table. Note that as the two outer b ...
Information Circular No. 358
... exploration and mining. This has led to a joint research project, involving geological teams from China and South Africa, whose aim it is to investigate PGE-bearing intrusions in both these countries. Early in 2001, the proposed three-year project entitled “A co-operative study of PGE-bearing layere ...
... exploration and mining. This has led to a joint research project, involving geological teams from China and South Africa, whose aim it is to investigate PGE-bearing intrusions in both these countries. Early in 2001, the proposed three-year project entitled “A co-operative study of PGE-bearing layere ...
- NERC Open Research Archive
... to mid-Palaeozoic (Singleton 1980), it is now clear that its mapped extent (Fig. 1) includes rocks of Ordovician to Jurassic outcrops (Wever et al. 1994; Riley et al. 2012b) and consequently magmatic ages for the metamorphic basement overlap with those of non-metamorphosed intrusive rocks (see below ...
... to mid-Palaeozoic (Singleton 1980), it is now clear that its mapped extent (Fig. 1) includes rocks of Ordovician to Jurassic outcrops (Wever et al. 1994; Riley et al. 2012b) and consequently magmatic ages for the metamorphic basement overlap with those of non-metamorphosed intrusive rocks (see below ...
Geological Society of America Bulletin
... Canal Basin laid a succession of mostly subaerial volcanic to volcaniclastic rocks (Bas Obispo and Las Cascadas Formations), which is overlain by a shallow-marine to continental sequence (Culebra and Cucaracha Formations), which in turn is topped by a volcanic and volcaniclastic unit, the Pedro Migu ...
... Canal Basin laid a succession of mostly subaerial volcanic to volcaniclastic rocks (Bas Obispo and Las Cascadas Formations), which is overlain by a shallow-marine to continental sequence (Culebra and Cucaracha Formations), which in turn is topped by a volcanic and volcaniclastic unit, the Pedro Migu ...
L.S. Normore - Department of Natural Resources
... Current Research (2012) Newfoundland and Labrador Department of Natural Resources Geological Survey, Report 12-1, pages 121-145 ...
... Current Research (2012) Newfoundland and Labrador Department of Natural Resources Geological Survey, Report 12-1, pages 121-145 ...
GEOLOGY OF PRE-MESOZOIC BEDROCK OF THE AMHERST
... ville domes represent this line of gneiss domes in Massachusetts ...
... ville domes represent this line of gneiss domes in Massachusetts ...
Lithosphere
... west of the active trace of the San Andreas fault in central California. The arkosic rocks are juxtaposed against granitic rocks of the Salinian block to the southwest and against fine-grained Great Valley Group and Jurassic Franciscan rocks to the northeast. We identify three distinct lithologic un ...
... west of the active trace of the San Andreas fault in central California. The arkosic rocks are juxtaposed against granitic rocks of the Salinian block to the southwest and against fine-grained Great Valley Group and Jurassic Franciscan rocks to the northeast. We identify three distinct lithologic un ...
Arkosic rocks from the San Andreas Fault
... west of the active trace of the San Andreas fault in central California. The arkosic rocks are juxtaposed against granitic rocks of the Salinian block to the southwest and against fine-grained Great Valley Group and Jurassic Franciscan rocks to the northeast. We identify three distinct lithologic un ...
... west of the active trace of the San Andreas fault in central California. The arkosic rocks are juxtaposed against granitic rocks of the Salinian block to the southwest and against fine-grained Great Valley Group and Jurassic Franciscan rocks to the northeast. We identify three distinct lithologic un ...
Barents project: Age and chemical character of the Perthite
... copper deposit and the Kiruna-Malmberget iron ores (Martinsson & Wanhainen 2013, Weihed et al. 2008). The Perthite monzonite suite is mainly found in the western part of Norrbotten County (further on referred to as Norrbotten), where it forms a broad, north-south trending belt. The Haparanda suite ...
... copper deposit and the Kiruna-Malmberget iron ores (Martinsson & Wanhainen 2013, Weihed et al. 2008). The Perthite monzonite suite is mainly found in the western part of Norrbotten County (further on referred to as Norrbotten), where it forms a broad, north-south trending belt. The Haparanda suite ...
Contents and Preface
... and in plate tectonics, in particular. As a result, solid Earth scientists from different backgrounds have studied the Earth’s lithosphere intensively. In doing so, most studies have focused on particular areas and/or on the use of particular methodologies. Plate-tectonics, with its early breakthrou ...
... and in plate tectonics, in particular. As a result, solid Earth scientists from different backgrounds have studied the Earth’s lithosphere intensively. In doing so, most studies have focused on particular areas and/or on the use of particular methodologies. Plate-tectonics, with its early breakthrou ...
TaskForceMajella
The TaskForceMajella (TFM) is an industry funded geoscientific research project conducted between the years 1998 and 2005. The project involved numerous universities distributed worldwide, and was sponsored by a number of international major oil companies. The area of research was the Majella Mountain in Central Italy, regarded as an analogue of a faulted and fractured hydrocarbon reservoir as can be found in major provinces like the Middle East, Caspian Basin, Mediterranean Basin, and other areas. The scope was to obtain knowledge on the relation between fracture and fault generation, and all types of geological aspects of the evolution of the geological structure.