Paleogeographic and tectonic implications of Jurassic sedimentary
... ⴣ 1.3 Ma (Lower Sidewinder volcanic series). A rhyolite dike of the Independence dike swarm (Upper Sidewinder volcanic series) that postdates normal faulting and tilting of the ignimbrites yielded a U-Pb date of 151.9 ⴣ 5.6 Ma. The data define the age of extension and development of the angular unco ...
... ⴣ 1.3 Ma (Lower Sidewinder volcanic series). A rhyolite dike of the Independence dike swarm (Upper Sidewinder volcanic series) that postdates normal faulting and tilting of the ignimbrites yielded a U-Pb date of 151.9 ⴣ 5.6 Ma. The data define the age of extension and development of the angular unco ...
Laramie Peak shear system, central Laramie
... crustal rocks of the Archean Wyoming province. The shear system is related to the 1.78 – 1.74 Ga Medicine Bow orogeny that involved the collision of an oceanic-arc terrane (Colorado province or Green Mountain block or arc) with the rifted, southern margin of the Wyoming province. The style and chara ...
... crustal rocks of the Archean Wyoming province. The shear system is related to the 1.78 – 1.74 Ga Medicine Bow orogeny that involved the collision of an oceanic-arc terrane (Colorado province or Green Mountain block or arc) with the rifted, southern margin of the Wyoming province. The style and chara ...
Imaging igneous rocks on the North Atlantic rifted continental margin
... 2006). The reason for this is that although the intrinsic basaltic quality factor (Q) is large, frequencies above about 20 Hz are severely attenuated due to the fact that the basalt sequences do not form a smooth homogeneous block, but rather a heterogeneous assemblage of layers and blocks, which va ...
... 2006). The reason for this is that although the intrinsic basaltic quality factor (Q) is large, frequencies above about 20 Hz are severely attenuated due to the fact that the basalt sequences do not form a smooth homogeneous block, but rather a heterogeneous assemblage of layers and blocks, which va ...
41. Comparison of the Chemical and Magnetic Stratigraphy of DSDP
... basalt chemical unit. TiO2 also shows little or no variation among laboratories (Wright, 1977; Appendix, this volume). The differences in TiO2 between aphyric and sparsely phyric chemical units are often larger than this by factors of 5 to 10. By and large, the group of chemical analyses by a given ...
... basalt chemical unit. TiO2 also shows little or no variation among laboratories (Wright, 1977; Appendix, this volume). The differences in TiO2 between aphyric and sparsely phyric chemical units are often larger than this by factors of 5 to 10. By and large, the group of chemical analyses by a given ...
Late Precambrian Stratigraphy and Structure of the North
... correlations (Føyn 1969; Siedlecka & Siedlecki 1972) it is thought that glacial and fluvial deposits of the lower Laksefjord Group, resting on crystalline rocks belonging to the Fennoscandian Shield at Laksefjord (Føyn 1960; Laird 1972), constitute the oldest record of the Late Precambrian depositio ...
... correlations (Føyn 1969; Siedlecka & Siedlecki 1972) it is thought that glacial and fluvial deposits of the lower Laksefjord Group, resting on crystalline rocks belonging to the Fennoscandian Shield at Laksefjord (Føyn 1960; Laird 1972), constitute the oldest record of the Late Precambrian depositio ...
1 - Shodhganga
... plains, contacts between the rock typos are visible only in a few places. To trace the contacts between different lithologies, outcrop mapping technique was employed. When the outcrops between two different lithologies were within 5 metres, the boundary drawn between them was considered as an observ ...
... plains, contacts between the rock typos are visible only in a few places. To trace the contacts between different lithologies, outcrop mapping technique was employed. When the outcrops between two different lithologies were within 5 metres, the boundary drawn between them was considered as an observ ...
Climax Quadrangle Geologic Map, Lake and Park Counties, Colorado
... The purpose of Colorado Geological Survey’s (CGS) Climax Quadrangle Geologic Map, Lake and Park Counties, Colorado is to describe the geology, mineral and ground‐water resource potential, and geologic hazards of this 7.5‐minute quadrangle located northeast of Leadville in central Colorado. Consu ...
... The purpose of Colorado Geological Survey’s (CGS) Climax Quadrangle Geologic Map, Lake and Park Counties, Colorado is to describe the geology, mineral and ground‐water resource potential, and geologic hazards of this 7.5‐minute quadrangle located northeast of Leadville in central Colorado. Consu ...
Geology of Southwestern Alaska (3.0MB, PDF)
... White Mountain sequence. The Mystic sequence represents less stable tectonic conditions and more diverse local depositional environments than those in the White Mountain sequence. Facies ...
... White Mountain sequence. The Mystic sequence represents less stable tectonic conditions and more diverse local depositional environments than those in the White Mountain sequence. Facies ...
Department of Natural Resources
... Labrador (GSNL) carried out a program of 1:50 000 bedrock geological mapping in the east-central Avalon Peninsula, in parts of NTS map areas 1N/3, 6, 7 and 11 (Figure 1). This ongoing work is the continuation of regional mapping undertaken in 1997, and incorporates mapping carried out during joint G ...
... Labrador (GSNL) carried out a program of 1:50 000 bedrock geological mapping in the east-central Avalon Peninsula, in parts of NTS map areas 1N/3, 6, 7 and 11 (Figure 1). This ongoing work is the continuation of regional mapping undertaken in 1997, and incorporates mapping carried out during joint G ...
Journal of Maps
... Fletcher, 2005; Twiss and Moore, 1992). All rocks are described and mapped considering their mineral composition, the type of planar and linear structural elements (e.g., foliation, lineation, etc.) and their corresponding mineral support. These data are represented in the map as colored foliation t ...
... Fletcher, 2005; Twiss and Moore, 1992). All rocks are described and mapped considering their mineral composition, the type of planar and linear structural elements (e.g., foliation, lineation, etc.) and their corresponding mineral support. These data are represented in the map as colored foliation t ...
CHAPTER 3: Geophysics and lithospheric structure of the Arabian
... additional small part of the total field is generated by electric currents flowing high above the planet–currents resulting from the stream of electrically charged gases that emanate from the Sun as “solar wind” and interact with the primary magnetic field of the Earth. The rotation of the Earth cau ...
... additional small part of the total field is generated by electric currents flowing high above the planet–currents resulting from the stream of electrically charged gases that emanate from the Sun as “solar wind” and interact with the primary magnetic field of the Earth. The rotation of the Earth cau ...
Tijeras-Canoncito fault system - New Mexico Geological Society
... explores some region of New Mexico (or surrounding states). Always well attended, these conferences provide a guidebook to participants. Besides detailed road logs, the guidebooks contain many well written, edited, and peer-reviewed geoscience papers. These books have set the national standard for g ...
... explores some region of New Mexico (or surrounding states). Always well attended, these conferences provide a guidebook to participants. Besides detailed road logs, the guidebooks contain many well written, edited, and peer-reviewed geoscience papers. These books have set the national standard for g ...
Precambrian Rocks of Alaska
... The record of Precambrian history of Alaska is certainly more fragmentary and less well known than that of the remainder of the United States. Available data indicate that the Precambrian rocks of Alaska are of Proterozoic age; at this time there is no evidence for Archean rocks (older than 2,500 m. ...
... The record of Precambrian history of Alaska is certainly more fragmentary and less well known than that of the remainder of the United States. Available data indicate that the Precambrian rocks of Alaska are of Proterozoic age; at this time there is no evidence for Archean rocks (older than 2,500 m. ...
T.Y.B.Sc. Geology
... B) a) Definition of Tectonic Elements of continents (cratons, shield, folded mountain belts)and oceans ( mid oceanic ridges, trenches and transform faults) b) Cratons of India and associated Proterozoic basins c) General review of Indian Stratigraphy & Classification of the Indian litho-stratigraphi ...
... B) a) Definition of Tectonic Elements of continents (cratons, shield, folded mountain belts)and oceans ( mid oceanic ridges, trenches and transform faults) b) Cratons of India and associated Proterozoic basins c) General review of Indian Stratigraphy & Classification of the Indian litho-stratigraphi ...
Geologic Quadrangle Map No. 40: Gravity, Magnetic, and
... time andreceivedmore than 20,000 feet of Jurassic and Cretaceous sediment. Laramide folding and thrusting rammed this thick succession of rock against the stableDiablo platform in the Van HornSierra Blanca region. Tertiary volcanism, midTertiary block faulting, and late Tertiary to Holocene normal f ...
... time andreceivedmore than 20,000 feet of Jurassic and Cretaceous sediment. Laramide folding and thrusting rammed this thick succession of rock against the stableDiablo platform in the Van HornSierra Blanca region. Tertiary volcanism, midTertiary block faulting, and late Tertiary to Holocene normal f ...
M44-2002-C24-eng - Publications du gouvernement du Canada
... Oxygen-isotope mapping of VMS hydrothermal systems (B. Taylor, GSC) The purpose of this subproject is to generate domain-scale maps showing the variations in oxygen isotopic values for volcanic and subvolcanic units associated with known or potential VMS mineralization. Taylor and South (1985), Cath ...
... Oxygen-isotope mapping of VMS hydrothermal systems (B. Taylor, GSC) The purpose of this subproject is to generate domain-scale maps showing the variations in oxygen isotopic values for volcanic and subvolcanic units associated with known or potential VMS mineralization. Taylor and South (1985), Cath ...
accepted manuscript
... age and terrane affiliation of lithologies in the eastern Beishan orogen through detrital zircon geochronology of meta-sedimentary rocks. We provide new information on the ages, subduction polarities, and affiliation of constituent structural units, as well as a new model of tectonic evolution of th ...
... age and terrane affiliation of lithologies in the eastern Beishan orogen through detrital zircon geochronology of meta-sedimentary rocks. We provide new information on the ages, subduction polarities, and affiliation of constituent structural units, as well as a new model of tectonic evolution of th ...
A-Level Handbook V4 - Earth Science Teachers` Association
... Word format – so that you can use it as a foundation to build upon and amend the content to suit your teaching style and students’ needs. ...
... Word format – so that you can use it as a foundation to build upon and amend the content to suit your teaching style and students’ needs. ...
Title K-feldspar sand-grain provenance in the Triassic
... sandstones of the Corrib gasfield, Slyne Basin, offshore west of Ireland (Figure 1) was probably sourced from Archaean and Proterozoic rocks (Tyrrell et al. 2007), indicating derivation from the north and west. These data preclude the Irish Mainland to the east or the remnant Variscan Uplands to the ...
... sandstones of the Corrib gasfield, Slyne Basin, offshore west of Ireland (Figure 1) was probably sourced from Archaean and Proterozoic rocks (Tyrrell et al. 2007), indicating derivation from the north and west. These data preclude the Irish Mainland to the east or the remnant Variscan Uplands to the ...
A new look at the Altaids: A superorogenic complex in northern and
... evolved along two major arc systems, both in part rifted from the Siberian Craton. Throughout the evolution of the system there were no continental or arc collisions until the system was sealed by its final collision with the intermediate units in the late Palaeozoic and the closure of the Khangai-K ...
... evolved along two major arc systems, both in part rifted from the Siberian Craton. Throughout the evolution of the system there were no continental or arc collisions until the system was sealed by its final collision with the intermediate units in the late Palaeozoic and the closure of the Khangai-K ...
Stratigraphy, structure and regional correlations of crustal
... Figure 9. Geologic map of the Belmina Ridge area and location of stop 1.1. Figure 10. Field sketch of the contact ophiolite-margin at the Belmina Ridge amphibolitic sole. Figure 11. Geological map of part of the Adstock-Ham Massif showing the location of normal(?) faults interpreted as syn-magmatic ...
... Figure 9. Geologic map of the Belmina Ridge area and location of stop 1.1. Figure 10. Field sketch of the contact ophiolite-margin at the Belmina Ridge amphibolitic sole. Figure 11. Geological map of part of the Adstock-Ham Massif showing the location of normal(?) faults interpreted as syn-magmatic ...
UNIT AS GL2a OR GL2b - Earth Science Teachers` Association
... Word format – so that you can use it as a foundation to build upon and amend the content to suit your teaching style and students’ needs. ...
... Word format – so that you can use it as a foundation to build upon and amend the content to suit your teaching style and students’ needs. ...
Download/View - ALQ Gold Corporation
... The authors have not visited the property or verified any of the historic data in person. Previous exploration has been conducted by geologists with professional designations, and in the context of this report the authors have no reason to doubt the data’s integrity. Historic data, including those w ...
... The authors have not visited the property or verified any of the historic data in person. Previous exploration has been conducted by geologists with professional designations, and in the context of this report the authors have no reason to doubt the data’s integrity. Historic data, including those w ...
39. crustal structure along the leg 152 drilling transect
... data (Larsen and Thorning, 1980), 24-fold 7-s MCS data (with regional sonobuoy refraction data; Larsen and Jakobsdóttir, 1988), 6fold 3-s high-resolution data (Larsen et al., 1994b), and deeper 60fold 14-s MCS data (with some wide-angle data close to the shore). In addition, regional marine gravity, ...
... data (Larsen and Thorning, 1980), 24-fold 7-s MCS data (with regional sonobuoy refraction data; Larsen and Jakobsdóttir, 1988), 6fold 3-s high-resolution data (Larsen et al., 1994b), and deeper 60fold 14-s MCS data (with some wide-angle data close to the shore). In addition, regional marine gravity, ...
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.