Drifting Continents
... 1. Thinking Critically: Oil deposits approximately 200 million years old have been discovered in Brazil. Where might geologists find oil deposits of a similar age? Explain. ...
... 1. Thinking Critically: Oil deposits approximately 200 million years old have been discovered in Brazil. Where might geologists find oil deposits of a similar age? Explain. ...
as a PDF
... terminal olefins by PPT were anhydrous chlorinated solvents (e.g., methylene chloride, 1,2-dichloroethane, chlorobenzene), aromatic hydrocarbons (e.g., benzene, toluene), or nitro compounds (e.g., nitrobenzene). Oxidation was strongly inhibited in alcoholic solutions (e.g., 2-propanol, tert-buty! al ...
... terminal olefins by PPT were anhydrous chlorinated solvents (e.g., methylene chloride, 1,2-dichloroethane, chlorobenzene), aromatic hydrocarbons (e.g., benzene, toluene), or nitro compounds (e.g., nitrobenzene). Oxidation was strongly inhibited in alcoholic solutions (e.g., 2-propanol, tert-buty! al ...
Chapter One Hemilabile Ligands in Transition
... which is an ether-phosphine ligand. Phosphines are one of the most versatile ligands that can bind to late transition metals, since they produce stable metal-phosphorus bonds.9 Hemilabile phosphines have potentially important industrial applications through the ability to tune the properties of the ...
... which is an ether-phosphine ligand. Phosphines are one of the most versatile ligands that can bind to late transition metals, since they produce stable metal-phosphorus bonds.9 Hemilabile phosphines have potentially important industrial applications through the ability to tune the properties of the ...
Plate Tectonics: A Paradigm Under Threat
... oceanic crust under the influence of gravitational and rotational forces. Interest was revived in the early 1950s with the rise of the new science of paleomagnetism, which seemed to provide strong support for continental drift. In the early 1960s, new data from ocean exploration led to the idea of s ...
... oceanic crust under the influence of gravitational and rotational forces. Interest was revived in the early 1950s with the rise of the new science of paleomagnetism, which seemed to provide strong support for continental drift. In the early 1960s, new data from ocean exploration led to the idea of s ...
Cratons, mobile belts, alkaline rocks and
... thickening of both crust and mechanical boundary layer of the former active margin which increases rigidity below the Moho. (C) Thermal instability (Bird 1979) particularly of the continental lithospheric mantle plunged rapidly into hot asthenosphere, and the weak link with the crust (Dunbar & Sawye ...
... thickening of both crust and mechanical boundary layer of the former active margin which increases rigidity below the Moho. (C) Thermal instability (Bird 1979) particularly of the continental lithospheric mantle plunged rapidly into hot asthenosphere, and the weak link with the crust (Dunbar & Sawye ...
From Organometallic Zinc and Copper Complexes to Highly
... The pre-catalyst solution was injected into a de-gassed solution of squalane in a continuously stirred tank reactor (CSTR), under an atmosphere of N2 at 298 K. A 3:1 H2:CO2 mixture, at 50 bar, was added and the reactor was heated to 523 K. The reaction was monitored using an in-line GC to detect the ...
... The pre-catalyst solution was injected into a de-gassed solution of squalane in a continuously stirred tank reactor (CSTR), under an atmosphere of N2 at 298 K. A 3:1 H2:CO2 mixture, at 50 bar, was added and the reactor was heated to 523 K. The reaction was monitored using an in-line GC to detect the ...
Sam P. de Visser,* Jan-Uwe Rohde,* Yong
... to have a lifetime that is long enough to enable spectroscopic characterization, and work by Hausinger, Krebs, and Bollinger provided compelling evidence of its spectroscopic and catalytic properties [37–39]. In particular, D was characterized by spectroscopic techniques as a high-spin FeIV O speci ...
... to have a lifetime that is long enough to enable spectroscopic characterization, and work by Hausinger, Krebs, and Bollinger provided compelling evidence of its spectroscopic and catalytic properties [37–39]. In particular, D was characterized by spectroscopic techniques as a high-spin FeIV O speci ...
Scholarly Interest Report
... apply. Yet, the Cascades arc is characterized by voluminous basaltic magmatism. To explain this enigma, alternative mechanisms and/or magma sources are seemingly required, and the solution to this paradox may shed new light on origins of primitive arc magmas worldwide. Our project focuses on basalti ...
... apply. Yet, the Cascades arc is characterized by voluminous basaltic magmatism. To explain this enigma, alternative mechanisms and/or magma sources are seemingly required, and the solution to this paradox may shed new light on origins of primitive arc magmas worldwide. Our project focuses on basalti ...
Metal Complexes Containing Natural and Artificial Radioactive
... individual properties of each element. In particular, 225Ac, which has a 10-day half-life, is a potential agent for α-particle therapy, as it decays emitting three such particles [2]. On the contrary, curium is an underexplored element for a variety of reasons. 244Cm has a short half-life of 18 year ...
... individual properties of each element. In particular, 225Ac, which has a 10-day half-life, is a potential agent for α-particle therapy, as it decays emitting three such particles [2]. On the contrary, curium is an underexplored element for a variety of reasons. 244Cm has a short half-life of 18 year ...
A crustal model of the ultrahigh-pressure Dabie Shan orogenic belt
... Methods of interpretation of seismic refraction data and model uncertainties are discussed by Mooney [1989], who estimates that seismic velocities are accurate to better than 3% and boundary depths (e.g., Moho) are accurate to better than 10% of the calculated depth. The phases Pg and Pn are recogni ...
... Methods of interpretation of seismic refraction data and model uncertainties are discussed by Mooney [1989], who estimates that seismic velocities are accurate to better than 3% and boundary depths (e.g., Moho) are accurate to better than 10% of the calculated depth. The phases Pg and Pn are recogni ...
Yellowstone in Yukon: The Late Cretaceous Carmacks Group
... K/Na) in these primitive lavas suggest, however, that phlogopite was either a fractionating phase during ascent to the surface or a residual phase in their mantle source. The most likely source for the Carmacks magmas was a refractory harzburgite that had been enriched in trace LILEs and LREEs by a ...
... K/Na) in these primitive lavas suggest, however, that phlogopite was either a fractionating phase during ascent to the surface or a residual phase in their mantle source. The most likely source for the Carmacks magmas was a refractory harzburgite that had been enriched in trace LILEs and LREEs by a ...
Older crust underlies Iceland
... The requirement for older, submerged crust beneath the younger lavas is in full agreement with the crustal accretion model of Palmason (1973, 1980). This model shows how the volcanic pile subsides beneath the weight of new erupted lavas as crustal accretion proceeds. Lavas may flow for long distance ...
... The requirement for older, submerged crust beneath the younger lavas is in full agreement with the crustal accretion model of Palmason (1973, 1980). This model shows how the volcanic pile subsides beneath the weight of new erupted lavas as crustal accretion proceeds. Lavas may flow for long distance ...
stratigraphy and history of raton basin and notes on san luis basin
... Raton Basin.—The Raton basin of northeastern New Mexico and southeastern Colorado is a Laramide structural basin bounded on the west by the Sangre de Cristo uplift, on the north by the Wet Mountains uplift and Apishapa arch, and on the east by the Sierra Grande arch. The basin is asymmetrical and th ...
... Raton Basin.—The Raton basin of northeastern New Mexico and southeastern Colorado is a Laramide structural basin bounded on the west by the Sangre de Cristo uplift, on the north by the Wet Mountains uplift and Apishapa arch, and on the east by the Sierra Grande arch. The basin is asymmetrical and th ...
INVITED REVIEW Petit-spot volcanism: A new type of volcanic zone
... area (~600 km along the direction of plate motion), but with a relatively small volume of magma production, thus indicating a small supply of heat inconsistent with a hotspot. The low-flux petit-spot volcanoes may be related to the occurrence of a tensional field of lithosphere caused by plate flexu ...
... area (~600 km along the direction of plate motion), but with a relatively small volume of magma production, thus indicating a small supply of heat inconsistent with a hotspot. The low-flux petit-spot volcanoes may be related to the occurrence of a tensional field of lithosphere caused by plate flexu ...
Plate Tectonics through Time Treatise on Geophysics, N. H. Sleep
... Yet we can do better with the deep past than Earth science did with the Tertiary in 1960. We can view geology at appropriate scales with the caveat that later tectonics dispersed the Archean record into 35 blocks (Bleeker, 2003). We have a reasonable understanding of the kinematics of modern Earth, ...
... Yet we can do better with the deep past than Earth science did with the Tertiary in 1960. We can view geology at appropriate scales with the caveat that later tectonics dispersed the Archean record into 35 blocks (Bleeker, 2003). We have a reasonable understanding of the kinematics of modern Earth, ...
Adakitic magmas: modern analogues of Archaean granitoids
... Both geochemical and experimental petrological research indicate that Archaean continental crust was generated by partial melting of an Archaean tholeiite transformed into a garnet-bearing amphibolite or eclogite. The geodynamic context of tholeiite melting is the subject of controversy. It is assum ...
... Both geochemical and experimental petrological research indicate that Archaean continental crust was generated by partial melting of an Archaean tholeiite transformed into a garnet-bearing amphibolite or eclogite. The geodynamic context of tholeiite melting is the subject of controversy. It is assum ...
"postorogenie" magmatism
... deformation. The apparent association with uplift indicates a simultaneous isostatic response. Changing or halting the external tectonic driving forces is one way of terminating deformation; however, this provides no explanation for the thermal pulse. Another means of halting convergent deformation ...
... deformation. The apparent association with uplift indicates a simultaneous isostatic response. Changing or halting the external tectonic driving forces is one way of terminating deformation; however, this provides no explanation for the thermal pulse. Another means of halting convergent deformation ...
Continental Drift
... How could continents drift? Although Wegener provided evidence to support his hypothesis of continental drift, he couldn’t explain how, when, or why these changes, shown in Figure 4, took place. The idea suggested that lower-density, continental material somehow had to plow through higher-density, ...
... How could continents drift? Although Wegener provided evidence to support his hypothesis of continental drift, he couldn’t explain how, when, or why these changes, shown in Figure 4, took place. The idea suggested that lower-density, continental material somehow had to plow through higher-density, ...
Atlantic volcanic margins: a comparative study
... Abstract: Volcanic margins in the Atlantic Ocean reveal a series of common crustal units and structural features developed during continental extension and break-up. We suggest that four main crustal zones can be recognized on volcanic margins. This tectono-magmatic zonation implies a history of dev ...
... Abstract: Volcanic margins in the Atlantic Ocean reveal a series of common crustal units and structural features developed during continental extension and break-up. We suggest that four main crustal zones can be recognized on volcanic margins. This tectono-magmatic zonation implies a history of dev ...
(2013) Porous fluid flow enables oceanic subduction initiation on
... amount of wet, naturally weakened material between the plates providing intrinsic lubrication, the easier the subduction can be initiated (Figure 3c). [12] Influence of initial porosity of hydrated rocks on subduction initiation appeared to be more complex (Figures 3c and 3d). On the one hand, initia ...
... amount of wet, naturally weakened material between the plates providing intrinsic lubrication, the easier the subduction can be initiated (Figure 3c). [12] Influence of initial porosity of hydrated rocks on subduction initiation appeared to be more complex (Figures 3c and 3d). On the one hand, initia ...