GEOLOGY OF THE PURCELL SUPERGROUP SOUTHEASTERN
... Proterozoic Windermere and Paleozoic miogeoclinal rocks. The Purcell Supergroup, the main focus of this study, has been affected by tectonic events in Middle and Late Proterozoic, Early Paleozoic and Mesozoic time. The Purcell Supergroup comprises athick accumulation of clastic and carbonaterocks th ...
... Proterozoic Windermere and Paleozoic miogeoclinal rocks. The Purcell Supergroup, the main focus of this study, has been affected by tectonic events in Middle and Late Proterozoic, Early Paleozoic and Mesozoic time. The Purcell Supergroup comprises athick accumulation of clastic and carbonaterocks th ...
Open File NFLD/3172 - Department of Natural Resources
... 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 active area for petroleum exploration, although it has yet to yield major discoveries. This field trip explor ...
... 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 active area for petroleum exploration, although it has yet to yield major discoveries. This field trip explor ...
guide to the geology trail - The Sleeping Giant Park Association
... accumulated, natural processes gradually cemented them together to form the red, tan, and gray sandstone and conglomerate that can be found across central Connecticut. Eventually, the mountainous highlands were eroded down to the rolling hills that are now present east and west of the Central Lowlan ...
... accumulated, natural processes gradually cemented them together to form the red, tan, and gray sandstone and conglomerate that can be found across central Connecticut. Eventually, the mountainous highlands were eroded down to the rolling hills that are now present east and west of the Central Lowlan ...
AZTEC QUADRANGLE NEW MEXICO AND COLORADO
... HSSR data involved: (1) dividing the quadrangle into areas by distinct drainage systems; (2) dividing the drainage areas on the basis of geologic units of similar age~ the presence of igneous and metamorphic rocks; and (3) performing a statistical analysis on the raw data for each of these areas. Fo ...
... HSSR data involved: (1) dividing the quadrangle into areas by distinct drainage systems; (2) dividing the drainage areas on the basis of geologic units of similar age~ the presence of igneous and metamorphic rocks; and (3) performing a statistical analysis on the raw data for each of these areas. Fo ...
The Picuris Formation - New Mexico Geological Society
... flanks of the Picuris Mountains, the formation is composed of: 1) a lower, basement- and volcanic-derived, highly weathered, conglomerate, sandstone, and siltstone member; 2) a middle, tuffaceous/pumicious sandstone member; and 3) a volcaniclastic pebble-conglomerate to mudstone member. Although comp ...
... flanks of the Picuris Mountains, the formation is composed of: 1) a lower, basement- and volcanic-derived, highly weathered, conglomerate, sandstone, and siltstone member; 2) a middle, tuffaceous/pumicious sandstone member; and 3) a volcaniclastic pebble-conglomerate to mudstone member. Although comp ...
Stratigraphic Framework of the
... Paleozoic rocks are known from only one locality on the peninsula. A few 10's of meters of midPermian limestone are exposed on one small islet at the entrance to Puale Bay (fig. 2; outcrop too small to show on maps in this report). Lower Mesozoic (Upper Triassic and Lower Jurassic) sedimentary rocks ...
... Paleozoic rocks are known from only one locality on the peninsula. A few 10's of meters of midPermian limestone are exposed on one small islet at the entrance to Puale Bay (fig. 2; outcrop too small to show on maps in this report). Lower Mesozoic (Upper Triassic and Lower Jurassic) sedimentary rocks ...
Geology of the Corona South quadrangle and the Santa Ana
... The dominant structural features are the Elsinore and Chino zones of high-angle reverse dip-separation faults and a synclinal trough which extends from the Puentesoutheastward beyond Corona and lies nearly parallel to and to the northElsinore fault. The surface distribution of Cretaceous sedimentary ...
... The dominant structural features are the Elsinore and Chino zones of high-angle reverse dip-separation faults and a synclinal trough which extends from the Puentesoutheastward beyond Corona and lies nearly parallel to and to the northElsinore fault. The surface distribution of Cretaceous sedimentary ...
L.S. Normore - Department of Natural Resources
... The diverse geology of the Random Island map area is subdivided into three Neoproterozoic groups (Love Cove, Connecting Point, and Musgravetown); two Neoproterozoic granitic bodies (Swift Current and Clarenville), and three post-Cambrian sedimentary units (Random Formation, and the Adeyton and Harco ...
... The diverse geology of the Random Island map area is subdivided into three Neoproterozoic groups (Love Cove, Connecting Point, and Musgravetown); two Neoproterozoic granitic bodies (Swift Current and Clarenville), and three post-Cambrian sedimentary units (Random Formation, and the Adeyton and Harco ...
Geology of the Kimberley Region, Western Australia: The East
... tralia geologists between 1962 and 1967: the results of the first three years' mapping—of the southeastern part of the Kimberiey region—are given in this Bulletin. Isotopic age deter minations were made on rocks throughout the Precambrian successions, and this has proved a valuable adjunct to the m ...
... tralia geologists between 1962 and 1967: the results of the first three years' mapping—of the southeastern part of the Kimberiey region—are given in this Bulletin. Isotopic age deter minations were made on rocks throughout the Precambrian successions, and this has proved a valuable adjunct to the m ...
Facies analysis and depositional environments of the Upper
... Siliciclastic facies group This facies group consists mainly of siliciclastic and other detrial grains derived from Triassic rocks of the Nakhlak area. The grains consist of quartz and reworked carbonate grains such as carbonate lithoclasts and eroded allochems. This facies group is composed of a va ...
... Siliciclastic facies group This facies group consists mainly of siliciclastic and other detrial grains derived from Triassic rocks of the Nakhlak area. The grains consist of quartz and reworked carbonate grains such as carbonate lithoclasts and eroded allochems. This facies group is composed of a va ...
Pennsylvanian Rocks in North
... The thick, dominantly marine Pennsylvanian section of the Lucero uplift area was mapped by Kelley and Wood (1946), and key sections were measured to describe the rocks of the Pennsylvanian-age Lucero-area sedimentary basin. Wilpolt and others (1946) mapped the Abo Pass area near the junction of Soco ...
... The thick, dominantly marine Pennsylvanian section of the Lucero uplift area was mapped by Kelley and Wood (1946), and key sections were measured to describe the rocks of the Pennsylvanian-age Lucero-area sedimentary basin. Wilpolt and others (1946) mapped the Abo Pass area near the junction of Soco ...
abo quadrangle, western half - New Mexico Bureau of Geology
... Stream alluvium (late Holocene to late Pleistocene) – poorly sorted, sandy to gravelly alluvium along valley bottoms; includes deposits underlying low stream terraces along some of the major drainages. Most Qa sediments are reddish in color, except in some of the terraces along Cañon Latigo and near ...
... Stream alluvium (late Holocene to late Pleistocene) – poorly sorted, sandy to gravelly alluvium along valley bottoms; includes deposits underlying low stream terraces along some of the major drainages. Most Qa sediments are reddish in color, except in some of the terraces along Cañon Latigo and near ...
geology of mount monadnock, new hampshire
... Gray-weathering schists in the Rangeley, although quite similar to those of the Littleton Formation, contain somewhat more feldspar and fewer phyllosilicate minerals. Calc-silicate pods similar to those in the rusty schists are also common. Marker Units Perry Mountain Formation. In the Monadnock qua ...
... Gray-weathering schists in the Rangeley, although quite similar to those of the Littleton Formation, contain somewhat more feldspar and fewer phyllosilicate minerals. Calc-silicate pods similar to those in the rusty schists are also common. Marker Units Perry Mountain Formation. In the Monadnock qua ...
Bulletin 113: Geology of East Portillo Mountains and Vicinity, Doña
... 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 stratigraphy. The oldest rocks exposed in the area are limestone, dolomitic limestone, and minor ...
... 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 stratigraphy. The oldest rocks exposed in the area are limestone, dolomitic limestone, and minor ...
Geology of the Dogskin Mountain Quadrangle, northern Walker
... shale, and unconsolidated sediments (Pliocene late to middle Miocene) White to pinkish-white to light gray, sandstone, siltstone, and diatomaceous shale, with poorly exposed tephra and ash beds; well sorted, subangular to well-rounded grains. Finely laminated bedding to massive 2–3 m thick layering; ...
... shale, and unconsolidated sediments (Pliocene late to middle Miocene) White to pinkish-white to light gray, sandstone, siltstone, and diatomaceous shale, with poorly exposed tephra and ash beds; well sorted, subangular to well-rounded grains. Finely laminated bedding to massive 2–3 m thick layering; ...
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 ...
Geologic Structures and Deformation
... disturbance from internal or external forces • Strike and dip • are attitudes in rocks produced by geologic forces when rocks are folded or faulted • Strike • an imaginary line with compass direction (expressed in bearing) constructed on top of a sedimentary bed or fault in which all points on the l ...
... disturbance from internal or external forces • Strike and dip • are attitudes in rocks produced by geologic forces when rocks are folded or faulted • Strike • an imaginary line with compass direction (expressed in bearing) constructed on top of a sedimentary bed or fault in which all points on the l ...
NATIONAL GEOSCIENCE CONFERENCE 2014
... Bukit Keluang, Bukit Kubus and Bukit Dendong form three isolated hills along the coastline of northern Terengganu (Fig. 2). These hills are made up of various sedimentary rocks such as conglomerate, sandstone, siltstone and red shale that comprise the Bukit Keluang Formation (Photo 5). Conglomerate ...
... Bukit Keluang, Bukit Kubus and Bukit Dendong form three isolated hills along the coastline of northern Terengganu (Fig. 2). These hills are made up of various sedimentary rocks such as conglomerate, sandstone, siltstone and red shale that comprise the Bukit Keluang Formation (Photo 5). Conglomerate ...
Geology of the Seal Rock Area
... beneath the ocean and was covered by a shallow sea, leaving the coastline at what is now the Willamette Valley. In this shallow sea or basin atop the submerged basalt, sediments such as clay, silt, mud and organic detritus gradually accumulated. They were compressed and cemented over millions of yea ...
... beneath the ocean and was covered by a shallow sea, leaving the coastline at what is now the Willamette Valley. In this shallow sea or basin atop the submerged basalt, sediments such as clay, silt, mud and organic detritus gradually accumulated. They were compressed and cemented over millions of yea ...
Geologic Map of the Prisor Hill Quadrangle, Sierra
... thick, traceable along strike for hundreds of meters before pinching out within mudstones. Conglomerate and conglomeratic sandstone consists largely of well-rounded, grainsupported pebbles, and cobbles mixed with variable amounts of sand. Clasts include a variety of Paleozoic limestone and sandstone ...
... thick, traceable along strike for hundreds of meters before pinching out within mudstones. Conglomerate and conglomeratic sandstone consists largely of well-rounded, grainsupported pebbles, and cobbles mixed with variable amounts of sand. Clasts include a variety of Paleozoic limestone and sandstone ...
Teachers guide to geologic trails in Delaware Water Gap National
... fluvial sediments are characterized by alternations of polymictic conglomerate with quartz pebbles more than 2 inches long, conglomeratic sandstone, and sandstone (cemented with silica to form quartzite), and subordinate siltstone and shale. The bedforms (planar beds and cross-bedding) indicate rapi ...
... fluvial sediments are characterized by alternations of polymictic conglomerate with quartz pebbles more than 2 inches long, conglomeratic sandstone, and sandstone (cemented with silica to form quartzite), and subordinate siltstone and shale. The bedforms (planar beds and cross-bedding) indicate rapi ...
1 I-68/I-70: A WINDOW TO THE APPALACHIANS by Dr. John J
... Stratigraphy: Stratigraphy is the study of sedimentary rocks. A characteristic of all sedimentary rocks is that they are bedded. Initially, all sediments are laid down horizontally with the oldest layer being on the bottom with the overlying layers becoming progressively younger. Whether they now ap ...
... Stratigraphy: Stratigraphy is the study of sedimentary rocks. A characteristic of all sedimentary rocks is that they are bedded. Initially, all sediments are laid down horizontally with the oldest layer being on the bottom with the overlying layers becoming progressively younger. Whether they now ap ...
sequence-of-geologic-events
... Tables, which rock layer was formed mainly from organically formed sediments in seawater? A) A B) B C) E D) F 3. Based on the given rock and fossil which two letters most likely indicate parts of the same layer? A) A and F B) B and D C) C and E D) D and A 4. Which processes were directly involved in ...
... Tables, which rock layer was formed mainly from organically formed sediments in seawater? A) A B) B C) E D) F 3. Based on the given rock and fossil which two letters most likely indicate parts of the same layer? A) A and F B) B and D C) C and E D) D and A 4. Which processes were directly involved in ...
SSlamang-Poster2014
... environment of the lower Ecca Group. The Ecca Group is thought by some to have been deposited in a ...
... environment of the lower Ecca Group. The Ecca Group is thought by some to have been deposited in a ...
Geology of the Capitol Reef area
The exposed geology of the Capitol Reef area presents a record of mostly Mesozoic-aged sedimentation in an area of North America in and around Capitol Reef National Park, on the Colorado Plateau in southeastern Utah.Nearly 10,000 feet (3,000 m) of sedimentary strata are found in the Capitol Reef area, representing nearly 200 million years of geologic history of the south-central part of the U.S. state of Utah. These rocks range in age from Permian (as old as 270 million years old) to Cretaceous (as young as 80 million years old.) Rock layers in the area reveal ancient climates as varied as rivers and swamps (Chinle Formation), Sahara-like deserts (Navajo Sandstone), and shallow ocean (Mancos Shale).The area's first known sediments were laid down as a shallow sea invaded the land in the Permian. At first sandstone was deposited but limestone followed as the sea deepened. After the sea retreated in the Triassic, streams deposited silt before the area was uplifted and underwent erosion. Conglomerate followed by logs, sand, mud and wind-transported volcanic ash were later added. Mid to Late Triassic time saw increasing aridity, during which vast amounts of sandstone were laid down along with some deposits from slow-moving streams. As another sea started to return, it periodically flooded the area and left evaporite deposits. Barrier islands, sand bars and later, tidal flats, contributed sand for sandstone, followed by cobbles for conglomerate, and mud for shale. The sea retreated, leaving streams, lakes and swampy plains to become the resting place for sediments. Another sea, the Western Interior Seaway, returned in the Cretaceous and left more sandstone and shale only to disappear in the early Cenozoic.From 70 to 50 million years ago the Laramide orogeny, a major mountain building event in western North America, created the Rocky Mountains to the east. The uplift possibly acted on a buried fault to form the area's Waterpocket Fold. More recent uplift of the entire Colorado Plateau and the resulting erosion has exposed this fold at the surface only within the last 15 to 20 million years. Ice ages in the Pleistocene increased the rate of precipitation and erosion. The cracked upper parts of the Waterpocket Fold were especially affected and the fold itself was exposed and dissected.