Wadhwan Formation of Western India
... exposed in the northeastern part of the Saurashtra basin comprise two formations: Dhrangadhra Formation and Wadhwan Formation, which are unconformably overlain by the Deccan Traps of Late Cretaceous age. Thin Neogene and Quaternary deposits occur along the Arabian Sea Coast of the Saurashtra peninsu ...
... exposed in the northeastern part of the Saurashtra basin comprise two formations: Dhrangadhra Formation and Wadhwan Formation, which are unconformably overlain by the Deccan Traps of Late Cretaceous age. Thin Neogene and Quaternary deposits occur along the Arabian Sea Coast of the Saurashtra peninsu ...
Precambrian stratigraphy of Manzanita and north Manzano
... Manzano Mountains. Reiche (1949) was the first to study the Precambrian geology of the entire North Manzano Mountains and to establish a stratigraphic sequence. This paper is based on four University of New Mexico master's theses, from north to south, by Connolly (1981, Tijeras Canyon), Cavin (in pr ...
... Manzano Mountains. Reiche (1949) was the first to study the Precambrian geology of the entire North Manzano Mountains and to establish a stratigraphic sequence. This paper is based on four University of New Mexico master's theses, from north to south, by Connolly (1981, Tijeras Canyon), Cavin (in pr ...
Range Front Structural Geometries and Décollement related
... Eurasia. Structural modification generally advanced southward with time. It characterized the tectonic-stratigraphic margin among Kohat Plateau in the north, Bannu Basin in the west and Punjab foreland in the south (Figure 2). Along the Surghar frontal fault Paleozoic to Cenozoic platform sequence i ...
... Eurasia. Structural modification generally advanced southward with time. It characterized the tectonic-stratigraphic margin among Kohat Plateau in the north, Bannu Basin in the west and Punjab foreland in the south (Figure 2). Along the Surghar frontal fault Paleozoic to Cenozoic platform sequence i ...
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 ...
Hydrogeology of the coastal plain between
... of 1:100 000 by Mory (1994a, b) in 1989. The earliest reports on groundwater are from exploratory drilling for water at Jurien by the Geological Survey of Western Australia (Berliat and Morgan, 1962; Milbourne, 1967). Subsequently the Watheroo – Jurien Bay Line of exploratory water bores, which incl ...
... of 1:100 000 by Mory (1994a, b) in 1989. The earliest reports on groundwater are from exploratory drilling for water at Jurien by the Geological Survey of Western Australia (Berliat and Morgan, 1962; Milbourne, 1967). Subsequently the Watheroo – Jurien Bay Line of exploratory water bores, which incl ...
Cambrian palaeomagnetic data confirm a Natal Embayment location
... The Liberty Hills Formation comprises a 1000 m thick sequence of conglomerates, quartzites, argillites and mafic lava. Lateral facies variations reveal a northward change in depositional environment from coarse-grained fluvial deposits, through transitional deltaic to fine-grained shallow marine uni ...
... The Liberty Hills Formation comprises a 1000 m thick sequence of conglomerates, quartzites, argillites and mafic lava. Lateral facies variations reveal a northward change in depositional environment from coarse-grained fluvial deposits, through transitional deltaic to fine-grained shallow marine uni ...
A Geology Training Manual for Grand Canyon National
... amounts of information about the Earth and the geologic history of southwestern North America. Looking down into the canyon gives you a glimpse nearly 2 billion years back in time. As you walk along the canyon rim, you step upon rocks that are a mere 250 million years old. And the huge, deep canyon ...
... amounts of information about the Earth and the geologic history of southwestern North America. Looking down into the canyon gives you a glimpse nearly 2 billion years back in time. As you walk along the canyon rim, you step upon rocks that are a mere 250 million years old. And the huge, deep canyon ...
Bedrock geology in New England submarine canyons
... we do not know precisely where this block came from, we interpret it to be derived from the canyon wall at sorne intermediate distance above the thalweg. Maestrichtian rocks Dive 781 in Corsair Canyon recovered a talus block of Maestrichtian-age calcareous glauconitic sandy mudstone (sample 781-1) a ...
... we do not know precisely where this block came from, we interpret it to be derived from the canyon wall at sorne intermediate distance above the thalweg. Maestrichtian rocks Dive 781 in Corsair Canyon recovered a talus block of Maestrichtian-age calcareous glauconitic sandy mudstone (sample 781-1) a ...
PALEOZOIC SUCCESSION IN THAILAND
... varying lithologies and thickness from west to east in the West, the North, the eastern Gulf 1 and the Peninsula. At places marine shelr sedimentation continued in the west and flysch type sediments in the east, but with local unconformities. In the middle part of the fold belt pronounced unconform ...
... varying lithologies and thickness from west to east in the West, the North, the eastern Gulf 1 and the Peninsula. At places marine shelr sedimentation continued in the west and flysch type sediments in the east, but with local unconformities. In the middle part of the fold belt pronounced unconform ...
geology of mount monadnock, new hampshire
... (Thompson, 1985) based on a stratigraphic sequence (Fig. 1) that correlates well with the so-called “Rangeley sequence” originally described by Moench and Boudette (1970) in western Maine and extended into central New Hampshire by Lyons and Hatch (Hatch et al., 1983). In this sequence, thick Siluria ...
... (Thompson, 1985) based on a stratigraphic sequence (Fig. 1) that correlates well with the so-called “Rangeley sequence” originally described by Moench and Boudette (1970) in western Maine and extended into central New Hampshire by Lyons and Hatch (Hatch et al., 1983). In this sequence, thick Siluria ...
Bulletin 113: Geology of East Portillo Mountains and Vicinity, Doña
... Abstract—Situated just north of the Mexico border in south-central Dona Ana County, New Mexico, the East Potrillo Mountains area reveals important details about Laramide, middle Tertiary, and late Tertiary deformation in the region, as well as data on Permian, Lower Cretaceous, and Cenozoic stratigr ...
... Abstract—Situated just north of the Mexico border in south-central Dona Ana County, New Mexico, the East Potrillo Mountains area reveals important details about Laramide, middle Tertiary, and late Tertiary deformation in the region, as well as data on Permian, Lower Cretaceous, and Cenozoic stratigr ...
Papers presented to the conference on Plateau Uplift, Mode and
... basaltic lavas were extruded in association with the uplift. Individual lava sheets approach 200 m thickness and persist for more than 200 km; in fact, the lavas appear to have been so fluid that they spread up to 1000 km or more (into northern Argentina) on slopes which rarely exceeded 10. ...
... basaltic lavas were extruded in association with the uplift. Individual lava sheets approach 200 m thickness and persist for more than 200 km; in fact, the lavas appear to have been so fluid that they spread up to 1000 km or more (into northern Argentina) on slopes which rarely exceeded 10. ...
Stratigraphy and Structure Canberra 1:50 000 Geological Map Area
... Shale. Opik recognized but did not name a unit of shale and mudstone that overlies the City Hill Shale; this unit has now been included in the St John's Church Beds. The stratigraphy of the proposed Canberra Group is shown in Figure 3. Only the thicknesses of the City Hill Shale and Camp Hill Sandst ...
... Shale. Opik recognized but did not name a unit of shale and mudstone that overlies the City Hill Shale; this unit has now been included in the St John's Church Beds. The stratigraphy of the proposed Canberra Group is shown in Figure 3. Only the thicknesses of the City Hill Shale and Camp Hill Sandst ...
pliocene volcanic rocks of the tschicoma formation, east
... to intermediate lavas and subordinate tuffs that erupted from overlapping dome and flow complexes over a period of about 2.5 m.y. during the Pliocene. The chemical and petrographic characteristics of the individual dome complexes are discussed in detail, and are sufficiently distinct that the lavas ca ...
... to intermediate lavas and subordinate tuffs that erupted from overlapping dome and flow complexes over a period of about 2.5 m.y. during the Pliocene. The chemical and petrographic characteristics of the individual dome complexes are discussed in detail, and are sufficiently distinct that the lavas ca ...
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., ...
Map of the 77th Annual Field Conference of Pennsylvania
... Continue straight past PA100, exit 49A and B. Hills straight ahead and to the right underlain by the Martinsburg Formation. Upgrade in I-78 marks contact between the Martinsburg Formation and the Epler Formation of the Beekmantown Group. Sherwood (1964) noted that the Jacksonburg Limestone was missi ...
... Continue straight past PA100, exit 49A and B. Hills straight ahead and to the right underlain by the Martinsburg Formation. Upgrade in I-78 marks contact between the Martinsburg Formation and the Epler Formation of the Beekmantown Group. Sherwood (1964) noted that the Jacksonburg Limestone was missi ...
Geology of the Eagle Mountains, Hudspeth County, Texas
... late Turonian, were deposited along the eastern margin of the Chihuahua Trough; they constitute most of the pre-Cenozoic rocks exposed in the Eagle Mountains and vicinity. The Comanche and Gulf Series, together comprising nine lithologically distinct formations, have been recognized. An unconformity ...
... late Turonian, were deposited along the eastern margin of the Chihuahua Trough; they constitute most of the pre-Cenozoic rocks exposed in the Eagle Mountains and vicinity. The Comanche and Gulf Series, together comprising nine lithologically distinct formations, have been recognized. An unconformity ...
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 ...
The Indonesian Sedimentologists Forum (FOSI)
... The Paleozoic sedimentary rocks of Langkawi are mostly shallow-marine shelf type deposits that extend within a broad linear belt from South China, through Burma, Thailand, and northwest Peninsular Malaysia into northern Sumatra. These sediments form part of the Sibumasu Block which broke away from n ...
... The Paleozoic sedimentary rocks of Langkawi are mostly shallow-marine shelf type deposits that extend within a broad linear belt from South China, through Burma, Thailand, and northwest Peninsular Malaysia into northern Sumatra. These sediments form part of the Sibumasu Block which broke away from n ...
Hoffmann_Duruchaus Fm
... conglomerate which passes upward into stratiied pebble and granule conglomerate interbedded with grit and sandstone. The upper part consists of thin, regularly bedded, micaceous sandstone which is interlayered at the top with shales and siltstones of the overlying argillaceous member. Clasts consist ...
... conglomerate which passes upward into stratiied pebble and granule conglomerate interbedded with grit and sandstone. The upper part consists of thin, regularly bedded, micaceous sandstone which is interlayered at the top with shales and siltstones of the overlying argillaceous member. Clasts consist ...
SSlamang-Poster2014
... retro-arc foreland basin, with deposition occurring mostly during the Permian. It comprises mostly ...
... retro-arc foreland basin, with deposition occurring mostly during the Permian. It comprises mostly ...
Field Trip Guide to the Upper Cretaceous Hornbrook Formation and
... Students in SOU’s field geology course examining sandstones of the Rocky Gulch Member of the Hornbrook Formation near Hilt, California. ...
... Students in SOU’s field geology course examining sandstones of the Rocky Gulch Member of the Hornbrook Formation near Hilt, California. ...
ft - Colorado Geological Survey
... has been gamed over a long period by many observers. A general description of the successive valleys was first made by Lee 2 in 1907, and his description has been drawn on in this paper. The general stratigraphy and structure of the pre-Tertiary rocks was presented by Darton 3 in 1928 in a comprehen ...
... has been gamed over a long period by many observers. A general description of the successive valleys was first made by Lee 2 in 1907, and his description has been drawn on in this paper. The general stratigraphy and structure of the pre-Tertiary rocks was presented by Darton 3 in 1928 in a comprehen ...
Character and Chronology of Basin Development, Western Margin
... Axelrod (1956) named and described three sedimentary formations in Coal Valley which together measure approximately 2,500 m in thickness and constitute the Wassuk Group. The two oldest of these, the Aldrich Station and Coal Valley Formations, are fluviolacustrine deposits consisting largely of andes ...
... Axelrod (1956) named and described three sedimentary formations in Coal Valley which together measure approximately 2,500 m in thickness and constitute the Wassuk Group. The two oldest of these, the Aldrich Station and Coal Valley Formations, are fluviolacustrine deposits consisting largely of andes ...
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.