STRIKE-SLIP AND OBLIQUE
... STRIKE-SLIP AND OBLIQUE-SLIP TECTONICS Strike–slip faulting is a common mode of deformation in both continental and oceanic crust and occurs at a wide range of scales. Strike slip systems are relatively narrow and subvertical wrench zones along which two adjacent blocks move sideways, horizontally, ...
... STRIKE-SLIP AND OBLIQUE-SLIP TECTONICS Strike–slip faulting is a common mode of deformation in both continental and oceanic crust and occurs at a wide range of scales. Strike slip systems are relatively narrow and subvertical wrench zones along which two adjacent blocks move sideways, horizontally, ...
Comparison of the Central Metamorphic Belt and Trinity terrane of
... formed during Devonian time. Phase assemblagesand mineral chemistries indicate peak P- T conditions of 5000 to 650 :i: 50°C and 500 :i: 300 MPa for both terranes. The similarities imply that the Klamath Mountains and Sierra Nevada share a common early to middle Paleozoic history. The Trinity terrane ...
... formed during Devonian time. Phase assemblagesand mineral chemistries indicate peak P- T conditions of 5000 to 650 :i: 50°C and 500 :i: 300 MPa for both terranes. The similarities imply that the Klamath Mountains and Sierra Nevada share a common early to middle Paleozoic history. The Trinity terrane ...
Earth & Space Science An open source text edited by MPS teachers
... 1. Identification of the copyrighted work, or, in the case of multiple works at the same location, a representative list of such works at that site. 2. Identification of the material that is claimed to be infringing or to be the subject of infringing activity. You must include sufficient information ...
... 1. Identification of the copyrighted work, or, in the case of multiple works at the same location, a representative list of such works at that site. 2. Identification of the material that is claimed to be infringing or to be the subject of infringing activity. You must include sufficient information ...
Leseane_okstate_0664M_13248
... abbreviated as Project for Rift Initiation Development and Evolution (PRIDE) is anticipated to close this knowledge gap. PRIDE will provide the geophysical imaging beneath nascent rift segments of the EARS such as Malawi and Okavango, hence providing a missing snapshot in the study of continental r ...
... abbreviated as Project for Rift Initiation Development and Evolution (PRIDE) is anticipated to close this knowledge gap. PRIDE will provide the geophysical imaging beneath nascent rift segments of the EARS such as Malawi and Okavango, hence providing a missing snapshot in the study of continental r ...
Scandium mineralizations in southern Norway
... intersects "fahlbands", i.e., schistose zones in the Precambrian gneisses rich in iron sulphides (mainly pyrrhotite). Ages of the hydrothermal veins have been given as 265 ± 3 Ma based on K-Ar isotope analysis of wall-rock alteration phyllosilicates (Ineson et al. 1975). The main ore-forming stages ...
... intersects "fahlbands", i.e., schistose zones in the Precambrian gneisses rich in iron sulphides (mainly pyrrhotite). Ages of the hydrothermal veins have been given as 265 ± 3 Ma based on K-Ar isotope analysis of wall-rock alteration phyllosilicates (Ineson et al. 1975). The main ore-forming stages ...
PDF
... The Neoproterozic Allaqi–Heiani suture in southeastern Egypt is the western extension of the Allaqi–Heiani–Onib–Sol Hamed–Yanbu suture that represents one of arc–arc sutures in the Arabian–Nubian Shield. It extends for more than 250 km from the N-trending Hamisana Shear Zone in the east to Lake Nass ...
... The Neoproterozic Allaqi–Heiani suture in southeastern Egypt is the western extension of the Allaqi–Heiani–Onib–Sol Hamed–Yanbu suture that represents one of arc–arc sutures in the Arabian–Nubian Shield. It extends for more than 250 km from the N-trending Hamisana Shear Zone in the east to Lake Nass ...
Fe-Ti oxidesilicate equilibria: Assemblages with fayalitic olivine
... ilmenite". * quartz) all give the same/o, at the temperature indicated by the oxides. Activities of FerO, in ilmenite and of Fe.Oo in titanomagnetite are calculated from the solution models of Andersen and Lindsley (1988).QUIIF must becomeasymptoticto the FMQ buF er at low temperatureswhere magnetit ...
... ilmenite". * quartz) all give the same/o, at the temperature indicated by the oxides. Activities of FerO, in ilmenite and of Fe.Oo in titanomagnetite are calculated from the solution models of Andersen and Lindsley (1988).QUIIF must becomeasymptoticto the FMQ buF er at low temperatureswhere magnetit ...
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 ...
On the tectonic origin of Iberian topography - E
... Tertiary sedimentary basins. Both types of surfaces can be found in continuity along the margins of some of the Tertiary basins. The Bouguer anomaly map of the Iberian peninsula indicates negative anomalies related to thickening of the continental crust. Correlations of elevation to crustal thicknes ...
... Tertiary sedimentary basins. Both types of surfaces can be found in continuity along the margins of some of the Tertiary basins. The Bouguer anomaly map of the Iberian peninsula indicates negative anomalies related to thickening of the continental crust. Correlations of elevation to crustal thicknes ...
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 ...
Mapping the Moho with seismic surface waves: A review, resolution
... time; the theoretical understanding of surface waves and the inversion tools that were available, however, were not sufficient to draw accurate conclusions on crustal structure. Ewing and Press (1950) gave a remarkable synthesis of surfacewave observations, using their own as well as previous measure ...
... time; the theoretical understanding of surface waves and the inversion tools that were available, however, were not sufficient to draw accurate conclusions on crustal structure. Ewing and Press (1950) gave a remarkable synthesis of surfacewave observations, using their own as well as previous measure ...
Earth and Planetary Science Letters 433, 204-214 , 2016.
... the Pacific basin, suggesting that geophysical conditions during formation probably resembled those that have dominated at eastern Pacific ridges. The microplate formed at the Indian–Antarctic ridge and is bordered by an extinct ridge in the north and pseudofault in the south, whose conjugate is locat ...
... the Pacific basin, suggesting that geophysical conditions during formation probably resembled those that have dominated at eastern Pacific ridges. The microplate formed at the Indian–Antarctic ridge and is bordered by an extinct ridge in the north and pseudofault in the south, whose conjugate is locat ...
A crustal transect across the Oman Mountains
... and Muawia Barazangi, Cornell University ABSTRACT The unique tectonic setting of the Oman Mountains and the Semail Ophiolite, together with ongoing hydrocarbon exploration, have focused geological research on the sedimentary and ophiolite stratigraphy of Oman. However, there have been few investigat ...
... and Muawia Barazangi, Cornell University ABSTRACT The unique tectonic setting of the Oman Mountains and the Semail Ophiolite, together with ongoing hydrocarbon exploration, have focused geological research on the sedimentary and ophiolite stratigraphy of Oman. However, there have been few investigat ...
ABSTRACT Callovian to early Kimmeridgian (Unitary Keywords: ophiolite, age, CRO, cordillera,
... magmatic arc province, the Great Valley forearc province, and the Franciscan accretionary complex (Fig. 1). The Sierra Nevada province consists of island arc volcanic, plutonic, and sedimentary rocks that range in age from Paleozoic to Late Cretaceous. Many of these rocks formed more or less in plac ...
... magmatic arc province, the Great Valley forearc province, and the Franciscan accretionary complex (Fig. 1). The Sierra Nevada province consists of island arc volcanic, plutonic, and sedimentary rocks that range in age from Paleozoic to Late Cretaceous. Many of these rocks formed more or less in plac ...
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 ...
volcanogenic massive sulphide deposits
... five deposit types, with both siliciclastic types accounting for the largest average tonnage. The mafic-siliciclastic deposit types have the highest average tonnage, with the number highly skewed by Windy Craggy. As expected, the three deposits types dominated by mafic volcanic and volcaniclastic ro ...
... five deposit types, with both siliciclastic types accounting for the largest average tonnage. The mafic-siliciclastic deposit types have the highest average tonnage, with the number highly skewed by Windy Craggy. As expected, the three deposits types dominated by mafic volcanic and volcaniclastic ro ...
Chapter 1 Introduction 1.1. Purpose of the investigation
... Kaapvaal Craton (Hartnady et al., 1985; Moor et at., 1990; Thomas et al., 1994a). Cornell et al. (1992) proposed an empirical pressure-temperature-time (P-T-t) path explaining the metamorphic evolution of the Areachap Group rocks at the Prieska Cu-Zn mine. This evolution will be summarized and amend ...
... Kaapvaal Craton (Hartnady et al., 1985; Moor et at., 1990; Thomas et al., 1994a). Cornell et al. (1992) proposed an empirical pressure-temperature-time (P-T-t) path explaining the metamorphic evolution of the Areachap Group rocks at the Prieska Cu-Zn mine. This evolution will be summarized and amend ...
state of knowledge of the geothermal provinces of the
... characterized by numerous current and past hydrothermal activities. Schematically, the country can be divided in two sectors, westward regions composed of plateaus and plains formed since 3.4 Ma and Eastward regions elevated and mountainous lands separated by the Gulf of Tadjourah ridge. Most of the ...
... characterized by numerous current and past hydrothermal activities. Schematically, the country can be divided in two sectors, westward regions composed of plateaus and plains formed since 3.4 Ma and Eastward regions elevated and mountainous lands separated by the Gulf of Tadjourah ridge. Most of the ...
joseph barrell - National Academy of Sciences
... as lucky in securing an instructorship at Lehigh in mining and metallurgy." This position he held for four years, teaching mechanical drawing, mining and metallurgical design, making shop visits to various metallurgical plants, and practising surveying with students in the anthracite mines. "Teachin ...
... as lucky in securing an instructorship at Lehigh in mining and metallurgy." This position he held for four years, teaching mechanical drawing, mining and metallurgical design, making shop visits to various metallurgical plants, and practising surveying with students in the anthracite mines. "Teachin ...
Structure and geological evolution of the bedrock of
... Plate tectonic reconstructions of the Precambrian of Finland, partly based on the results of major deep seismic sounding experiments, such as the international GGT/SVEKA project (along a NE-SW transect through the Satakunta area), indicate the pelitic and psammitic migmatite belts in Satakunta repre ...
... Plate tectonic reconstructions of the Precambrian of Finland, partly based on the results of major deep seismic sounding experiments, such as the international GGT/SVEKA project (along a NE-SW transect through the Satakunta area), indicate the pelitic and psammitic migmatite belts in Satakunta repre ...
Large igneous province
A large igneous province (LIP) is an extremely large accumulation of igneous rocks, including liquid rock (intrusive) or volcanic rock formations (extrusive), when hot magma extrudes from inside the Earth and flows out. The source of many or all LIPs is variously attributed to mantle plumes or to processes associated with plate tectonics. Types of LIPs can include large volcanic provinces (LVP), created through flood basalt and large plutonic provinces (LPP). Eleven distinct flood basalt episodes occurred in the past 250 million years, creating volcanic provinces, which coincided with mass extinctions in prehistoric times. Formation depends on a range of factors, such as continental configuration, latitude, volume, rate, duration of eruption, style and setting (continental vs. oceanic), the preexisting climate state, and the biota resilience to change.