Open File NFLD/3172 - Department of Natural Resources
... Ordovician succession of the Laurentian passive continental margin. It also provides a world-class record of the foundering of the continental shelf, emplacement of allochthons including oceanic crustal rocks, and subsequent deformational events from Ordovician to Devonian. The region is also an act ...
... Ordovician succession of the Laurentian passive continental margin. It also provides a world-class record of the foundering of the continental shelf, emplacement of allochthons including oceanic crustal rocks, and subsequent deformational events from Ordovician to Devonian. The region is also an act ...
Stratigraphic Framework of the
... arc; it shifted with time to the Alaska-Aleutian Range batholith (Middle Jurassic)and included some recycled older sediments. Clasts from this early Mesozoic volcanic arc are included within the Talkeetna Formation. The Tertiary sequence i s somewhat thinner than the Mesozoic one; it has a maximum t ...
... arc; it shifted with time to the Alaska-Aleutian Range batholith (Middle Jurassic)and included some recycled older sediments. Clasts from this early Mesozoic volcanic arc are included within the Talkeetna Formation. The Tertiary sequence i s somewhat thinner than the Mesozoic one; it has a maximum t ...
DNR White Pass - Yakima Campbell
... Vanderbilt Gap—summit of Manashtash Ridge; elevation 2,700 feet. The roadcut geology here is complex and open to interpretation. A large fault or faults have placed the pre-Vantage Museum flow in contact with post-Vantage flows; the downthrown block is to the south and displacement is several hundred ...
... Vanderbilt Gap—summit of Manashtash Ridge; elevation 2,700 feet. The roadcut geology here is complex and open to interpretation. A large fault or faults have placed the pre-Vantage Museum flow in contact with post-Vantage flows; the downthrown block is to the south and displacement is several hundred ...
Tectono-stratigraphic framework of Neoproterozoic to Cambrian
... fluvial to marine, feldspathic to quartzose sandstone, conglomerate, and mudstone, with detrital zircon (DZ) patterns recording a mix of local basement sources to the N and distal Laurentian sources to the SE. The lower Perry Canyon and related formations contain variably feldspathic sandstone, quart ...
... fluvial to marine, feldspathic to quartzose sandstone, conglomerate, and mudstone, with detrital zircon (DZ) patterns recording a mix of local basement sources to the N and distal Laurentian sources to the SE. The lower Perry Canyon and related formations contain variably feldspathic sandstone, quart ...
A Geology Training Manual for Grand Canyon National
... should first understand the words and the language the book is written in. The words are the geologic features observed in the rocks and the language is the science of geology. Grand Canyon is a geologic display like no other. In terms of geologic research and education, it has been a window into th ...
... should first understand the words and the language the book is written in. The words are the geologic features observed in the rocks and the language is the science of geology. Grand Canyon is a geologic display like no other. In terms of geologic research and education, it has been a window into th ...
Geology of the Corona South quadrangle and the Santa Ana
... The rejriou in jreneral eonsists of alluviated valleys separated hy rather narrow mountain raufies, whicli trend northwestward. The tlat lanils are mostly less tiian 1, ;")()() feet above sea level and slope jrently up to the bases of the mountain raiifres. The mountains rise sharply above the alluv ...
... The rejriou in jreneral eonsists of alluviated valleys separated hy rather narrow mountain raufies, whicli trend northwestward. The tlat lanils are mostly less tiian 1, ;")()() feet above sea level and slope jrently up to the bases of the mountain raiifres. The mountains rise sharply above the alluv ...
Bedrock geology in New England submarine canyons
... at a depth of 1 335 rn (Plate 2 d). This exposure on the slope of Heezen Canyon most likely corresponds to sorne portion of the Neocomian section sampled in Heezen Canyon thalweg during Dive 783 (left side of Figure 5). If these rocks are truly horizontally bedded, the canyon wall exposure may lie s ...
... at a depth of 1 335 rn (Plate 2 d). This exposure on the slope of Heezen Canyon most likely corresponds to sorne portion of the Neocomian section sampled in Heezen Canyon thalweg during Dive 783 (left side of Figure 5). If these rocks are truly horizontally bedded, the canyon wall exposure may lie s ...
Hydrogeology of the coastal plain between
... largely of lithified Pleistocene eolianite with leached quartz sand (Tamala Limestone). The Tamala Limestone commonly forms low hills that follow the old dune topography, but is exposed in low-lying cliffs along some sections of the coast. The dune system extends up to 19 km inland in the Coolimba– ...
... largely of lithified Pleistocene eolianite with leached quartz sand (Tamala Limestone). The Tamala Limestone commonly forms low hills that follow the old dune topography, but is exposed in low-lying cliffs along some sections of the coast. The dune system extends up to 19 km inland in the Coolimba– ...
Map of the 77th Annual Field Conference of Pennsylvania
... Topset and foreset beds in a glacial delta exposed in sandpit to left. Exposure of Marcellus Shale on right. The Marcellus in this area is a medium dark-gray to grayish-black, laminated to poorly bedded, shale and silty shale. It lies more than 4,000 ft (1,219 m) above the Martinsburg Formation. Cle ...
... Topset and foreset beds in a glacial delta exposed in sandpit to left. Exposure of Marcellus Shale on right. The Marcellus in this area is a medium dark-gray to grayish-black, laminated to poorly bedded, shale and silty shale. It lies more than 4,000 ft (1,219 m) above the Martinsburg Formation. Cle ...
geologic map of the pocatello south quadrangle, bannock and
... Alluvial fan gravel of Mink Creek valley (Holocene and Pleistocene)—Muddy sand and gravel and beds of silty reworked loess. Similar to Qfp, but mapped separately because part of unit is modified by the Bonneville Flood. Michaud Gravel (late Pleistocene)—Named by Trimble and Carr (1961) and Carr and ...
... Alluvial fan gravel of Mink Creek valley (Holocene and Pleistocene)—Muddy sand and gravel and beds of silty reworked loess. Similar to Qfp, but mapped separately because part of unit is modified by the Bonneville Flood. Michaud Gravel (late Pleistocene)—Named by Trimble and Carr (1961) and Carr and ...
Character and Chronology of Basin Development, Western Margin
... Near the western margin of the Basin and Range Province in an area encompassing some 1,500 km 2 between Mono Lake, California, and Yerington, Nevada, six structural basins contain thick accumulations of Miocene-Pliocene sedimentary and volcanic rocks. From approximately 22 to 18 m.y. ago, the area w ...
... Near the western margin of the Basin and Range Province in an area encompassing some 1,500 km 2 between Mono Lake, California, and Yerington, Nevada, six structural basins contain thick accumulations of Miocene-Pliocene sedimentary and volcanic rocks. From approximately 22 to 18 m.y. ago, the area w ...
Pennsylvanian Rocks of the Mogollon Rim Area, Arizona
... lithology to the Molas Formation of the Four Corners region. This Queen Creek Canyon section contrasts with the Pennsylvanian sections to the south (in southeastern Arizona) because of the large amount of clastic rocks. The lower 780 feet of the Pennsylvanian barely includes more limestone than sili ...
... lithology to the Molas Formation of the Four Corners region. This Queen Creek Canyon section contrasts with the Pennsylvanian sections to the south (in southeastern Arizona) because of the large amount of clastic rocks. The lower 780 feet of the Pennsylvanian barely includes more limestone than sili ...
Geologic Map of Paleozoic Rocks in the Mount Morrison Pendant
... deposited in a continental shelf (miogeoclinal) environment, and coeval, deep-water siliceous and argillaceous (eugeoclinal) rocks of the Antler belt exposed to the north and northeast in west central Nevada and in the Saddlebag Lake, Northern Ritter Range and Log Cabin Mine pendants (Greene et al., ...
... deposited in a continental shelf (miogeoclinal) environment, and coeval, deep-water siliceous and argillaceous (eugeoclinal) rocks of the Antler belt exposed to the north and northeast in west central Nevada and in the Saddlebag Lake, Northern Ritter Range and Log Cabin Mine pendants (Greene et al., ...
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 ...
Permian and Triassic rocks of the Appleby district (part of Sheet 30
... exclusively fluvial origin from farther east in the Vale of Eden Basin. This facies has been referred to as the ‘Upper Brockram’ by previous authors. It occurs in the higher parts of the Penrith Sandstone Formation, and consists of finer grained breccias that were deposited entirely by ephemeral str ...
... exclusively fluvial origin from farther east in the Vale of Eden Basin. This facies has been referred to as the ‘Upper Brockram’ by previous authors. It occurs in the higher parts of the Penrith Sandstone Formation, and consists of finer grained breccias that were deposited entirely by ephemeral str ...
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 ...
Post-Hercynian formations of the western Tauern window
... deposited on oceanic crust (FRISCH, 1974; T O L L M A N N , 1975) by the following reasons: serpentinites occur in connection with tholeiitic (ocean floor) basalts ( B I C K L E & P E A R C E , 1975), and there are more complete ophiolite sequences in the same position in the Western Alps. A crystal ...
... deposited on oceanic crust (FRISCH, 1974; T O L L M A N N , 1975) by the following reasons: serpentinites occur in connection with tholeiitic (ocean floor) basalts ( B I C K L E & P E A R C E , 1975), and there are more complete ophiolite sequences in the same position in the Western Alps. A crystal ...
Document
... 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 that this unit is of Late Triassic age and equivalent to the lower part of the Chinle formation and of ...
... 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 that this unit is of Late Triassic age and equivalent to the lower part of the Chinle formation and of ...
Geology of the Little Black Peak Quadrangle Socorro and Lincoln
... type locality. North and west of the Little Black Peak quadrangle a prominent mappable unit, the Glorieta Sandstone, occurs at the base of the San Andres Formation. The U.S. Geological Survey considers the Glorieta Sandstone a member of the San Andres whereas others (Keyes, 1915; Hager and Robitaill ...
... type locality. North and west of the Little Black Peak quadrangle a prominent mappable unit, the Glorieta Sandstone, occurs at the base of the San Andres Formation. The U.S. Geological Survey considers the Glorieta Sandstone a member of the San Andres whereas others (Keyes, 1915; Hager and Robitaill ...
Geology of High Point State Park
... three parts. The lower part consists of gray to red, cross-bedded sandstone containing pebbles. It gradually changes into the middle part consisting of very thinly layered, finer-grained sandstone or siltstone that locally contains trace fossils. Cross-bedding in the sandstone layers shows that wate ...
... three parts. The lower part consists of gray to red, cross-bedded sandstone containing pebbles. It gradually changes into the middle part consisting of very thinly layered, finer-grained sandstone or siltstone that locally contains trace fossils. Cross-bedding in the sandstone layers shows that wate ...
The Cacapon Resort and Lost River State Parks
... from preexisting rock by heat, pressure, and time). Exceptions include igneous bodies in Pendleton County and the Catoctin Greenstone in the Eastern Panhandle. Movements of the earth’s crust (tectonic plates) cause episodes of mountain building, called orogenies, which have major effects on the land ...
... from preexisting rock by heat, pressure, and time). Exceptions include igneous bodies in Pendleton County and the Catoctin Greenstone in the Eastern Panhandle. Movements of the earth’s crust (tectonic plates) cause episodes of mountain building, called orogenies, which have major effects on the land ...
Worcestershire Building Stone Atlas
... Formation is the massive light brown rock that in the Mamble and Abberley areas reaches 30m thick. Known as the Highley Sandstone (or Thick Sandstone) it has been used in the building of the churches and cottages in Mamble, Bayton and Abberley. In these locations the rock is massive, grey and brown ...
... Formation is the massive light brown rock that in the Mamble and Abberley areas reaches 30m thick. Known as the Highley Sandstone (or Thick Sandstone) it has been used in the building of the churches and cottages in Mamble, Bayton and Abberley. In these locations the rock is massive, grey and brown ...
Field Guide to Tectonic Evolution of Utah`s Central Wasatch
... Another enigma of this rock body is that within every cubic centimeter of its dark mud are the fossil remains of more than 100,000 plankton and bacteria (Fig. 9b). These early single-celled life forms are no larger than the width of a hair (< 1/100 mm, 1/10,000 of an inch). Why did all of these orga ...
... Another enigma of this rock body is that within every cubic centimeter of its dark mud are the fossil remains of more than 100,000 plankton and bacteria (Fig. 9b). These early single-celled life forms are no larger than the width of a hair (< 1/100 mm, 1/10,000 of an inch). Why did all of these orga ...
Cenozoic Formations from Erbil to Kore
... set.The formation consists mainly of clastics sediment, which in general coarsens upwards. The dominant color of the clastics is red color,consists of sandstone& mudstonefig. (3) The mudstone is occasionally silty with some thin horizons of interbedded siltstone, which are reddish brown. Soft to fai ...
... set.The formation consists mainly of clastics sediment, which in general coarsens upwards. The dominant color of the clastics is red color,consists of sandstone& mudstonefig. (3) The mudstone is occasionally silty with some thin horizons of interbedded siltstone, which are reddish brown. Soft to fai ...
Geology of the Zion and Kolob canyons area
The geology of the Zion and Kolob canyons area includes nine known exposed formations, all visible in Zion National Park in the U.S. state of Utah. Together, these formations represent about 150 million years of mostly Mesozoic-aged sedimentation in that part of North America. Part of a super-sequence of rock units called the Grand Staircase, the formations exposed in the Zion and Kolob area were deposited in several different environments that range from the warm shallow seas of the Kaibab and Moenkopi formations, streams and lakes of the Chinle, Moenave, and Kayenta formations to the large deserts of the Navajo and Temple Cap formations and dry near shore environments of the Carmel Formation.Subsequent uplift of the Colorado Plateau slowly raised these formations much higher than where they were deposited. This steepened the stream gradient of the ancestral rivers and other streams on the plateau. The faster-moving streams took advantage of uplift-created joints in the rocks to remove all Cenozoic-aged formations and cut gorges into the plateaus. Zion Canyon was cut by the North Fork of the Virgin River in this way. Lava flows and cinder cones covered parts of the area during the later part of this process.Zion National Park includes an elevated plateau that consists of sedimentary formations that dip very gently to the east. This means that the oldest strata are exposed along the Virgin River in the Zion Canyon part of the park, and the youngest are exposed in the Kolob Canyons section. The plateau is bounded on the east by the Sevier Fault Zone, and on the west by the Hurricane Fault Zone. Weathering and erosion along north-trending faults and fractures influence the formation of landscape features, such as canyons, in this region.