Mesozoic fill-sequences in Hefei Basin: Implication for Dabie
... wavy diagonal bedding. K2z2: brownish red, greyish purple thick-layer conglomerates and sandstones interbedded with silty mudstones in thin-layer, in which trough cross-bedding and washing surfaces frequently occur at the bottom of this unit. The upward-fining depositional processes are developed in ...
... wavy diagonal bedding. K2z2: brownish red, greyish purple thick-layer conglomerates and sandstones interbedded with silty mudstones in thin-layer, in which trough cross-bedding and washing surfaces frequently occur at the bottom of this unit. The upward-fining depositional processes are developed in ...
Pennsylvanian Rocks of the Mogollon Rim Area, Arizona
... northwestern Arizona. Regional tectonics of the Mogollon "slope" were discussed by Kelley and Clinton (1960). South of Jerome, McNair (1951) measured more than 300 feet (the top an erosion surface) of lower Supai red beds unconformable on the Redwall Limestone . Similarly, Anderson and Creasey (1958 ...
... northwestern Arizona. Regional tectonics of the Mogollon "slope" were discussed by Kelley and Clinton (1960). South of Jerome, McNair (1951) measured more than 300 feet (the top an erosion surface) of lower Supai red beds unconformable on the Redwall Limestone . Similarly, Anderson and Creasey (1958 ...
NWGS Swauk-Snoq
... arkosic and volcanic rocks which has been referred to by previous workers as the “Challis volcanic episode.” Rocks in this episode are 55-36 Ma and are widespread throughout Washington (Fig. 4). The well known O’Brien Creek Formation, the Sanpoil Volcanics, and Klondike Mountain Formation near Repub ...
... arkosic and volcanic rocks which has been referred to by previous workers as the “Challis volcanic episode.” Rocks in this episode are 55-36 Ma and are widespread throughout Washington (Fig. 4). The well known O’Brien Creek Formation, the Sanpoil Volcanics, and Klondike Mountain Formation near Repub ...
Paleozoic stratigraphy, tectonics and metallogeny
... The lower Kechika group comprises four laterally equivalent, interfingered sedimentary-volcanic facies (Ram, Groundhog, Cloutier and Gray Creek formations) that crop out across the Pelly Mountains (Fig. 2; TempelmanKluit, 2012). The Cloutier formation, named for exposures near Cloutier Creek, contai ...
... The lower Kechika group comprises four laterally equivalent, interfingered sedimentary-volcanic facies (Ram, Groundhog, Cloutier and Gray Creek formations) that crop out across the Pelly Mountains (Fig. 2; TempelmanKluit, 2012). The Cloutier formation, named for exposures near Cloutier Creek, contai ...
Sequoia and Kings Canyon
... From Junction View, you can see where the Middle and South Forks join to form the Kings River. These rivers are in the steep, rugged, V-shaped canyons that were cut during the Plio-Pleistocene uplift of the Sierra Nevada. The bottom of the canyon is 8,000 feet below the top of Spanish Mountain, whic ...
... From Junction View, you can see where the Middle and South Forks join to form the Kings River. These rivers are in the steep, rugged, V-shaped canyons that were cut during the Plio-Pleistocene uplift of the Sierra Nevada. The bottom of the canyon is 8,000 feet below the top of Spanish Mountain, whic ...
NWGS NE WA
... The Deer Trail Group (Fig. 3, 4) consists of a >2 km thick sequence of argillite, siltite, quartzite, conglomerate, dolomite, and magnesite that was metamorphosed to lower greenschist grade and strongly deformed during the Mesozoic (Fig. 5) (Evans, 1987; Watkinson and Ellis, 1987). It is composed of ...
... The Deer Trail Group (Fig. 3, 4) consists of a >2 km thick sequence of argillite, siltite, quartzite, conglomerate, dolomite, and magnesite that was metamorphosed to lower greenschist grade and strongly deformed during the Mesozoic (Fig. 5) (Evans, 1987; Watkinson and Ellis, 1987). It is composed of ...
Have the ancient cities of Sodom and Gomorrah been
... light tan “tongue” in the Dead Sea. Lake Lisan had its highest stand at 180 meters below sea level about 24,000 to 25,000 years ago and formed a lake completely filling the Jordan Valley. Former wave-cut beaches can be found at this level. At this time, this high stand was 200 meters above the curre ...
... light tan “tongue” in the Dead Sea. Lake Lisan had its highest stand at 180 meters below sea level about 24,000 to 25,000 years ago and formed a lake completely filling the Jordan Valley. Former wave-cut beaches can be found at this level. At this time, this high stand was 200 meters above the curre ...
Geology of the Jolon and Williams Hill Quadrangles Monterey County, California (USGS BUlletin 1181-Q 1965)
... drainage areas of the San Antonio and Nacimiento Rivers, two major western tributaries of the Salinas River. Plutonic rocks of the pre-Tertiary basement complex crop out in two small areas near the Nacimiento River, and were reportedly reached in 13 wells drilled northeast of the San Antonio River i ...
... drainage areas of the San Antonio and Nacimiento Rivers, two major western tributaries of the Salinas River. Plutonic rocks of the pre-Tertiary basement complex crop out in two small areas near the Nacimiento River, and were reportedly reached in 13 wells drilled northeast of the San Antonio River i ...
MSU Billings Government Documents Weeding List I 19.3 Numbers 1400’s
... A Study of the Cretaceous-Tertiary Unconformity in the Piceance Creek Basin, Colorado: The underlying Ohio Creek Formation (Upper Cretaceous) Redefined as a Member of the Hunter Canyon of Mesaverde Formation I 19.3:1482- C ...
... A Study of the Cretaceous-Tertiary Unconformity in the Piceance Creek Basin, Colorado: The underlying Ohio Creek Formation (Upper Cretaceous) Redefined as a Member of the Hunter Canyon of Mesaverde Formation I 19.3:1482- C ...
Field Guide - Stanford Earth Sciences
... metamorphic rocks (dark green), Mesozoic, mostly Cretaceous, plutonic rocks (red), Cenozoic sedimentary rocks (yellow), and Cenozoic volcanic rocks (pale ...
... metamorphic rocks (dark green), Mesozoic, mostly Cretaceous, plutonic rocks (red), Cenozoic sedimentary rocks (yellow), and Cenozoic volcanic rocks (pale ...
GUIDE TO THE GEOLOGY OF BRADGATE PARK AND
... however, it is clear that more isotopic determinations will be needed in order to constrain the entire age-range of the succession. Mode of origin of the Charnian Supergroup Evidence concerning the mode of formation of the Charnian sequence is at first sight contradictory. In the south and east - f ...
... however, it is clear that more isotopic determinations will be needed in order to constrain the entire age-range of the succession. Mode of origin of the Charnian Supergroup Evidence concerning the mode of formation of the Charnian sequence is at first sight contradictory. In the south and east - f ...
geologic map of the pocatello south quadrangle, bannock and
... member. Marble is thin-bedded to massive, tan to dark gray, typically composed of calcite but locally dolomite, and as much as 30 feet thick. Quartzite is interbedded with interlaminated metasiltstone and fine-grained quartzite, typical of the Papoose Creek Formation, in the lower 100-300 feet. Lowe ...
... member. Marble is thin-bedded to massive, tan to dark gray, typically composed of calcite but locally dolomite, and as much as 30 feet thick. Quartzite is interbedded with interlaminated metasiltstone and fine-grained quartzite, typical of the Papoose Creek Formation, in the lower 100-300 feet. Lowe ...
the karuah bypass - Australian Geomechanics Society
... The area considered in this study lies within a geological region which is generally referred to as the New England Fold Belt (NEFB) ranging in age from late Devonian to Late Carboniferous (Carey and Browne, 1938). It is more correctly described as the New England Orogen, although the more tradition ...
... The area considered in this study lies within a geological region which is generally referred to as the New England Fold Belt (NEFB) ranging in age from late Devonian to Late Carboniferous (Carey and Browne, 1938). It is more correctly described as the New England Orogen, although the more tradition ...
Geology of the Little Black Peak Quadrangle Socorro and Lincoln
... The upper gypsum facies of the San Andres Formation is well-developed in the area and locally may comprise nearly 400 feet of the formation. Gypsum and light-gray limestone alternate in layers from 20 to 30 feet thick. The gypsum beds are massive, white and contain few impurities. The limestone beds ...
... The upper gypsum facies of the San Andres Formation is well-developed in the area and locally may comprise nearly 400 feet of the formation. Gypsum and light-gray limestone alternate in layers from 20 to 30 feet thick. The gypsum beds are massive, white and contain few impurities. The limestone beds ...
4. Kittitas Valley
... The flows of the Grand Ronde member of the Columbia River Basalts are basalt. Locally, flows include a pillow-palagonite complex at their base, a reflection of the wet landscape which persisted between eruptive events. Elsewhere these flows display classic columnar structure, a reflection of the cooling ...
... The flows of the Grand Ronde member of the Columbia River Basalts are basalt. Locally, flows include a pillow-palagonite complex at their base, a reflection of the wet landscape which persisted between eruptive events. Elsewhere these flows display classic columnar structure, a reflection of the cooling ...
Sequence stratigraphy of source and reservoir rocks in the
... Group predicts a thick shale-dominated unit of interbedded organic-rich and organic-lean units to be present in the central part of Jameson Land. High frequency lake-level fluctuations controlled the organic content of the shales and the source-prone intervals are suggested to have formed during hig ...
... Group predicts a thick shale-dominated unit of interbedded organic-rich and organic-lean units to be present in the central part of Jameson Land. High frequency lake-level fluctuations controlled the organic content of the shales and the source-prone intervals are suggested to have formed during hig ...
`Gastroliths` deposited by mass flow
... I found several of these stones in the Morrison Formation after looking for only an hour. If I can find several after a quick search, there must be billions of these so-called ‘gastroliths’ in the ‘late Jurassic’ Morrison Formation. Since few gastroliths are associated with dinosaur bones, the Flood ...
... I found several of these stones in the Morrison Formation after looking for only an hour. If I can find several after a quick search, there must be billions of these so-called ‘gastroliths’ in the ‘late Jurassic’ Morrison Formation. Since few gastroliths are associated with dinosaur bones, the Flood ...
This field trip will emphasize the changing geographic
... Ocean Dallas is the story of rocks and fossils in what is now the Dallas-Fort Worth region, called the Metroplex by many of the people who live here. It explains the changing geographic arrangement of land and sea during the time interval from 96 Ma to 86 Ma (mega-annum, which means millions of year ...
... Ocean Dallas is the story of rocks and fossils in what is now the Dallas-Fort Worth region, called the Metroplex by many of the people who live here. It explains the changing geographic arrangement of land and sea during the time interval from 96 Ma to 86 Ma (mega-annum, which means millions of year ...
Post-Hercynian formations of the western Tauern window
... hundred metres in thickness. It is an immature clastic sediment, often coarsegrained, and rich in granitic and rhyolitic material. Carboniferous and Permian granites, and probably Permian rhyolites are both found in the basement of the Venediger nappe. The upper member of the Wustkogel formation con ...
... hundred metres in thickness. It is an immature clastic sediment, often coarsegrained, and rich in granitic and rhyolitic material. Carboniferous and Permian granites, and probably Permian rhyolites are both found in the basement of the Venediger nappe. The upper member of the Wustkogel formation con ...
Document
... Papa Agie member.-The uppermost member consists of ocher and red mudstone, lighter colored, lenticular sandstone beds, and analcite beds between the Alcova limestone member and the overlying Nugget sandstone. Vertebrate remains found along the northeastern flank of the Wind River Mountains indicate ...
... Papa Agie member.-The uppermost member consists of ocher and red mudstone, lighter colored, lenticular sandstone beds, and analcite beds between the Alcova limestone member and the overlying Nugget sandstone. Vertebrate remains found along the northeastern flank of the Wind River Mountains indicate ...
On the supposed existence of the Kisap thrust in the Langkawi
... deformational events and the correlation and ages of the different rock units are important considerations for any structural interpretations. The well publicised controversy regarding the existence of a Lower Palaeozoic folding phase illustrates the difficulty of reconciling the available structura ...
... deformational events and the correlation and ages of the different rock units are important considerations for any structural interpretations. The well publicised controversy regarding the existence of a Lower Palaeozoic folding phase illustrates the difficulty of reconciling the available structura ...
The Cacapon Resort and Lost River State Parks
... West Virginia is called the Mountain State largely because the average elevation is over 1,500 feet above sea level. This is the highest average elevation of any state east of the Mississippi River. The relief, difference between the highest and lowest points, of the state is 4,613 feet. The lowest ...
... West Virginia is called the Mountain State largely because the average elevation is over 1,500 feet above sea level. This is the highest average elevation of any state east of the Mississippi River. The relief, difference between the highest and lowest points, of the state is 4,613 feet. The lowest ...
Frimmel_Chameis subterrane_Gariep
... such as Zr and Nb, indicate an open marine environment with little continental clastic influence, as these trace element concentrations are all in the range of normal marine carbonate rocks. However, the evaporitederived dolomite is almost devoid of any continental influence with its Rb, Zr, Nb, Th ...
... such as Zr and Nb, indicate an open marine environment with little continental clastic influence, as these trace element concentrations are all in the range of normal marine carbonate rocks. However, the evaporitederived dolomite is almost devoid of any continental influence with its Rb, Zr, Nb, Th ...
Precambrian Rocks of Northern Arizona
... represented by the Vishnu included originally both sedimentary and igneous types. Noble and Hunter (1917) examined the older Precambrian rocks along a 40-mile stretch of the river near the eastern end of Grand Canyon, in what is known as the upper Granite Gorge. They estimated that 50 percent of the ...
... represented by the Vishnu included originally both sedimentary and igneous types. Noble and Hunter (1917) examined the older Precambrian rocks along a 40-mile stretch of the river near the eastern end of Grand Canyon, in what is known as the upper Granite Gorge. They estimated that 50 percent of the ...
Geology of the Bryce Canyon area
The exposed geology of the Bryce Canyon area in Utah shows a record of deposition that covers the last part of the Cretaceous Period and the first half of the Cenozoic era in that part of North America. The ancient depositional environment of the region around what is now Bryce Canyon National Park varied from the warm shallow sea (called the Cretaceous Seaway) in which the Dakota Sandstone and the Tropic Shale were deposited to the cool streams and lakes that contributed sediment to the colorful Claron Formation that dominates the park's amphitheaters.Other formations were also formed but were mostly eroded following uplift from the Laramide orogeny which started around 70 million years ago (mya). This event created the Rocky Mountains far to the east and helped to close the sea that covered the area. A large part of western North America started to stretch itself into the nearby Basin and Range topography around 15 mya. While not part of this region, the greater Bryce area was stretched into the High Plateaus by the same forces. Uplift of the Colorado Plateaus and the opening of the Gulf of California by 5 mya changed the drainage of the Colorado River and its tributaries, including the Paria River, which is eroding headward in between two plateaus adjacent to the park. The uplift caused the formation of vertical joints which were later preferentially eroded to form the free-standing pinnacles called hoodoos, badlands, and monoliths we see today. The formations exposed in the area of the park are part of the Grand Staircase. The oldest members of this supersequence of rock units are exposed in the Grand Canyon, the intermediate ones in Zion National Park, and its youngest parts are laid bare in Bryce Canyon area. A small amount of overlap occurs in and around each park.