PowerPoint Presentation - ISOSTASY - UW
... Intracratonic Basin: large-scale basins far from mountain belts that form very wide, gentle synclines. Commonly large but not very deep ...
... Intracratonic Basin: large-scale basins far from mountain belts that form very wide, gentle synclines. Commonly large but not very deep ...
Plate Tectonics
... 5. On the Mid- Atlantic Ridge, the North American plate is moving away from the Eurasian and the African Plates. This process is making the Atlantic Ocean larger. ...
... 5. On the Mid- Atlantic Ridge, the North American plate is moving away from the Eurasian and the African Plates. This process is making the Atlantic Ocean larger. ...
Outstanding geologic feature of Pennsylvania—Sentinel
... Sentinel Rock is a prominent pinnacle of bedrock on the hillside just east of the spillway for the Lake Nockamixon dam in Nockamixon State Park. The pinnacle has been separated along a vertical, northeast-oriented joint from a blocky outcrop of Brunswick Formation, which is composed of brownish-red ...
... Sentinel Rock is a prominent pinnacle of bedrock on the hillside just east of the spillway for the Lake Nockamixon dam in Nockamixon State Park. The pinnacle has been separated along a vertical, northeast-oriented joint from a blocky outcrop of Brunswick Formation, which is composed of brownish-red ...
1 Glossary of Geological Terms For composition of different
... For composition of different Formations and Groups, see Stratigraphic Columns Acraman impact ejecta layer (AIEL) Layer of shattered volcanic rock blasted from the Gawler Ranges about 580 million years ago by the impact of a meteorite about 5 km across. The layer, generally about 5 cm thick, was depo ...
... For composition of different Formations and Groups, see Stratigraphic Columns Acraman impact ejecta layer (AIEL) Layer of shattered volcanic rock blasted from the Gawler Ranges about 580 million years ago by the impact of a meteorite about 5 km across. The layer, generally about 5 cm thick, was depo ...
Glossary - Walking Trails Support Group
... banded Parallel stripes of different colours, generally, but not always, representing bedding in sedimentary rocks. barite Barium sulphate; common in veins in the Flinders Ranges, generally white. Notably more dense than common rocks. basalt Dark green igneous or volcanic rock, made up mainly of fel ...
... banded Parallel stripes of different colours, generally, but not always, representing bedding in sedimentary rocks. barite Barium sulphate; common in veins in the Flinders Ranges, generally white. Notably more dense than common rocks. basalt Dark green igneous or volcanic rock, made up mainly of fel ...
Ocean-Continent Convergent Plate Boundaries Quiz
... Compare and contrast how mountains are made and how volcanic mountains are made. Both are made when two plates collide. Mountain building can be made by two continental crust colliding with each other creating a mountain. Volcanic mountains are made by subduction when an oceanic plate collides with ...
... Compare and contrast how mountains are made and how volcanic mountains are made. Both are made when two plates collide. Mountain building can be made by two continental crust colliding with each other creating a mountain. Volcanic mountains are made by subduction when an oceanic plate collides with ...
geology exam is - Spring Branch ISD
... 1. Name one mineral that you can scratch with your fingernail. 2. Which mineral can scratch anything? ...
... 1. Name one mineral that you can scratch with your fingernail. 2. Which mineral can scratch anything? ...
Geol 101: Physical Geology PAST EXAM QUESTIONS LECTURE
... 13. Into what category of sedimentary rocks does the type of rock fall that forms by the evaporation of water and consequent precipitation of minerals like halite? A. gypsum B. detrital C. clastic D. chemical E. biochemical 13. Which of the following is NOT a mineral commonly produced by evaporation ...
... 13. Into what category of sedimentary rocks does the type of rock fall that forms by the evaporation of water and consequent precipitation of minerals like halite? A. gypsum B. detrital C. clastic D. chemical E. biochemical 13. Which of the following is NOT a mineral commonly produced by evaporation ...
Word
... 13. Into what category of sedimentary rocks does the type of rock fall that forms by the evaporation of water and consequent precipitation of minerals like halite? A. gypsum B. detrital C. clastic D. chemical E. biochemical 13. Which of the following is NOT a mineral commonly produced by evaporation ...
... 13. Into what category of sedimentary rocks does the type of rock fall that forms by the evaporation of water and consequent precipitation of minerals like halite? A. gypsum B. detrital C. clastic D. chemical E. biochemical 13. Which of the following is NOT a mineral commonly produced by evaporation ...
pp chpt 4 Igneous Rocks.pptx
... Intrusive Rock Bodies • Less dense magmas rise through the crust • Rising magmas slowly cool – Viscosity increases – Density increases ...
... Intrusive Rock Bodies • Less dense magmas rise through the crust • Rising magmas slowly cool – Viscosity increases – Density increases ...
Material properties and microstructure from
... tholeiitic lava flow from the Abitibi Greenstone Belt in the Canadian Craton. Our result effectively extends the early Archean convective mixing time to ~1.8 Gyr, i.e. even longer than present-day mantle mixing timescale [3], despite a more vigorous convection expected in the Archean. Different hypo ...
... tholeiitic lava flow from the Abitibi Greenstone Belt in the Canadian Craton. Our result effectively extends the early Archean convective mixing time to ~1.8 Gyr, i.e. even longer than present-day mantle mixing timescale [3], despite a more vigorous convection expected in the Archean. Different hypo ...
7 THE GEOLOGICAL ENVIRONMENT FOR REPOSITORY SITING
... The pre-Neogene rocks, regardless of rock type, belong to “well-lithified hard rocks” by the Japanese civil engineering standard. The Neogene rocks belong to “well- to semi-lithified rocks” or “soft rocks”. The Quaternary rocks comprise unconsolidated to weakly lithified sediments and unconsolidated ...
... The pre-Neogene rocks, regardless of rock type, belong to “well-lithified hard rocks” by the Japanese civil engineering standard. The Neogene rocks belong to “well- to semi-lithified rocks” or “soft rocks”. The Quaternary rocks comprise unconsolidated to weakly lithified sediments and unconsolidated ...
Lecture 7 Geologic Time
... Cenozoic‐ "recent life; life resembles today's fauna and flora. (Tertiary‐Quaternary) ...
... Cenozoic‐ "recent life; life resembles today's fauna and flora. (Tertiary‐Quaternary) ...
Chapter 21- Planet Earth
... the theory that explains how the outer parts of Earth ______________________________, and that explains the relationships between _______________________________, sea-floor spreading, ____________________________, and volcanic activity ...
... the theory that explains how the outer parts of Earth ______________________________, and that explains the relationships between _______________________________, sea-floor spreading, ____________________________, and volcanic activity ...
The Rock Cycle
... sediment kept piling on top of us, squeezing and cementing us together. The pressure became intense. Over many, many years we began to form into a sedimentary rock. Picture 7 (Shale, a Sedimentary Rock) ...
... sediment kept piling on top of us, squeezing and cementing us together. The pressure became intense. Over many, many years we began to form into a sedimentary rock. Picture 7 (Shale, a Sedimentary Rock) ...
Earth`s Internal Structure Earth`s Layered Structure In the preceding
... Earth’s Layered Structure In the preceding section, you learned that the segregation of material that began early inEarth’s history resulted in the formation of three layers defined by their chemical composition—the crust, mantle, and core. In addition to these compositionally distinct layers, Earth ...
... Earth’s Layered Structure In the preceding section, you learned that the segregation of material that began early inEarth’s history resulted in the formation of three layers defined by their chemical composition—the crust, mantle, and core. In addition to these compositionally distinct layers, Earth ...
Petrología de rocas ígneas y
... Rocks form most of our planet, they form the continents where life was developed on Earth since the last 3000 millions years. The history of the Earth is written in the rocks in such a way that the study of rocks allows us to reconstruct the complex processes involved in mountain building, volcanism ...
... Rocks form most of our planet, they form the continents where life was developed on Earth since the last 3000 millions years. The history of the Earth is written in the rocks in such a way that the study of rocks allows us to reconstruct the complex processes involved in mountain building, volcanism ...
Formation of Gems and Minerals
... • Pegmatites are unusual magma bodies that form beryl and tourmaline – As a magma body cools, water originally present in low concentrations becomes concentrated in the molten rock because it does not get incorporated into most minerals that crystallize. Consequently, the last, uncrystallized fracti ...
... • Pegmatites are unusual magma bodies that form beryl and tourmaline – As a magma body cools, water originally present in low concentrations becomes concentrated in the molten rock because it does not get incorporated into most minerals that crystallize. Consequently, the last, uncrystallized fracti ...
Aim: How do the different types of plate boundaries differ?
... Name the three different types of plate boundaries. (Use the pictures to help you name them.) ...
... Name the three different types of plate boundaries. (Use the pictures to help you name them.) ...
M211-Adirondack-New England Mixed Forest
... slate, and schist with extensive area of igneous rocks including granites, diorite, gabbro, and basalt. Forest vegetation consists of spruce-fir, maple-beech-birch, and aspen-birch cover types. (Photo: Staff, USDA Forest Service) ...
... slate, and schist with extensive area of igneous rocks including granites, diorite, gabbro, and basalt. Forest vegetation consists of spruce-fir, maple-beech-birch, and aspen-birch cover types. (Photo: Staff, USDA Forest Service) ...
Calc alk volcanism
... Andes Mountains The Andes are often cited as the type example of a calc-alkaline volcanic chain. There are three active segments of the arc-trench system (See diagram)> The northern segment is characterized by dominantly basaltic lavas, the central segment by andesitic lavas and the southern segment ...
... Andes Mountains The Andes are often cited as the type example of a calc-alkaline volcanic chain. There are three active segments of the arc-trench system (See diagram)> The northern segment is characterized by dominantly basaltic lavas, the central segment by andesitic lavas and the southern segment ...
Magmatic Ores
... Chromite Deposits Types: 1- Stratiform (Bushveld type; stable cratons) 2- Podiform (Alpine type; orogenic; associated with ophiolites, or with Archean greenstone belts). Uses of Chromite: (Cr/Fe ratio and Mg and Al contents are important; cf. Evans). 1- Source of Cr, necessary for the steel industry ...
... Chromite Deposits Types: 1- Stratiform (Bushveld type; stable cratons) 2- Podiform (Alpine type; orogenic; associated with ophiolites, or with Archean greenstone belts). Uses of Chromite: (Cr/Fe ratio and Mg and Al contents are important; cf. Evans). 1- Source of Cr, necessary for the steel industry ...
Algoman orogeny
The Algoman orogeny, known as the Kenoran orogeny in Canada, was an episode of mountain-building (orogeny) during the Late Archean Eon that involved repeated episodes of continental collisions, compressions and subductions. The Superior province and the Minnesota River Valley terrane collided about 2,700 to 2,500 million years ago. The collision folded the Earth's crust and produced enough heat and pressure to metamorphose the rock. Blocks were added to the Superior province along a 1,200 km (750 mi) boundary that stretches from present-day eastern South Dakota into the Lake Huron area. The Algoman orogeny brought the Archaen Eon to a close, about 2,500 million years ago; it lasted less than 100 million years and marks a major change in the development of the earth’s crust.The Canadian shield contains belts of metavolcanic and metasedimentary rocks formed by the action of metamorphism on volcanic and sedimentary rock. The areas between individual belts consist of granites or granitic gneisses that form fault zones. These two types of belts can be seen in the Wabigoon, Quetico and Wawa subprovinces; the Wabigoon and Wawa are of volcanic origin and the Quetico is of sedimentary origin. These three subprovinces lie linearly in southwestern- to northeastern-oriented belts about 140 km (90 mi) wide on the southern portion of the Superior Province.The Slave province and portions of the Nain province were also affected. Between about 2,000 and 1,700 million years ago these combined with the Sask and Wyoming cratons to form the first supercontinent, the Kenorland supercontinent.