Igneous rocks
... obsidian does not contain crystals. Pumice: a volcanic rock that contains many air bubbles (technical name: vesicles). Tuff: a volcanic rock consisting of fragments of rock blown apart in a volcanic eruption. Tuffs can contain fragments of crystals, volcanic glass, pumice, or broken rock that once s ...
... obsidian does not contain crystals. Pumice: a volcanic rock that contains many air bubbles (technical name: vesicles). Tuff: a volcanic rock consisting of fragments of rock blown apart in a volcanic eruption. Tuffs can contain fragments of crystals, volcanic glass, pumice, or broken rock that once s ...
Regional metamorphism
... Contact metamorphism Rocks can also be heated by intruding magmas, and the increase in their temperature can cause them to become metamorphosed. Because magmas often rise to very shallow levels in the crust (and of course often erupt), they carry their heat into low pressure environments. This he ...
... Contact metamorphism Rocks can also be heated by intruding magmas, and the increase in their temperature can cause them to become metamorphosed. Because magmas often rise to very shallow levels in the crust (and of course often erupt), they carry their heat into low pressure environments. This he ...
Sedimentary Rocks
... World’s Biggest Rock The Ayers Rock is made up of arkose, a coursegrained sandstone rich in feldspar at least 2.5 km thick. Uplifting and folding between 400300 mya turned the sedimentary layers nearly 90 degrees to their present position. The surface has then been eroded. ...
... World’s Biggest Rock The Ayers Rock is made up of arkose, a coursegrained sandstone rich in feldspar at least 2.5 km thick. Uplifting and folding between 400300 mya turned the sedimentary layers nearly 90 degrees to their present position. The surface has then been eroded. ...
Vocabulary Review
... the area where one lithospheric plate slides under another at convergent plate boundaries; some crust is destroyed boundary between plates that are sliding past each other at one time in geologic history the continents were joined together in one large landmass called by this name ...
... the area where one lithospheric plate slides under another at convergent plate boundaries; some crust is destroyed boundary between plates that are sliding past each other at one time in geologic history the continents were joined together in one large landmass called by this name ...
Earth 1
... 1. Igneous Rocks (Fact: Igneous means “fiery”) a. How they form: When magma reaches the surface, it becomes lava. b. This hot, molten rock cools and hardens to form igneous rock. c. Characteristics: Igneous rocks vary in size, shape, color, and texture. Examples: basalt, pumice, obsidian ...
... 1. Igneous Rocks (Fact: Igneous means “fiery”) a. How they form: When magma reaches the surface, it becomes lava. b. This hot, molten rock cools and hardens to form igneous rock. c. Characteristics: Igneous rocks vary in size, shape, color, and texture. Examples: basalt, pumice, obsidian ...
Rocks - The Science Queen
... combine to break down or dissolve (weather), and carry away (transport) rocks exposed at the surface. These particles eventually come to rest (deposited) and become hard rock (lithified). ...
... combine to break down or dissolve (weather), and carry away (transport) rocks exposed at the surface. These particles eventually come to rest (deposited) and become hard rock (lithified). ...
EARTH SYSTEMS (Plate Tectonics) KUD
... Delaware were mostly deposited in either river (sometimes called fluvial), marine (i.e., coastal or shallow water), or glacial environments. In the present day, sediments are being deposited in Delaware on land, near the coast in swamps and marshes, and in portions of Delaware Bay. The rocks and sed ...
... Delaware were mostly deposited in either river (sometimes called fluvial), marine (i.e., coastal or shallow water), or glacial environments. In the present day, sediments are being deposited in Delaware on land, near the coast in swamps and marshes, and in portions of Delaware Bay. The rocks and sed ...
Igneous Rock Classification.
... which are typically dark, whereas felsic rocks are low in Mg+Fe, and are therefore typically much lighter in colour, being dominated by quartz and feldspars. This gives rise to the concept of Colour Index, which is the volume percent of the rock that is accounted for by mafic minerals (e.g. olivine, ...
... which are typically dark, whereas felsic rocks are low in Mg+Fe, and are therefore typically much lighter in colour, being dominated by quartz and feldspars. This gives rise to the concept of Colour Index, which is the volume percent of the rock that is accounted for by mafic minerals (e.g. olivine, ...
Understand the effect of rock type and climate upon the rate, degree
... Frost action: freezing and thawing in cracks and pores in rocks, enlarging the cracks and pores— eventually, pieces of rock (called scree) break off altogether. Exfoliation (“onion skin weathering”): 1. During the day the sun heats up the surface of the rock causing the rock to expand. 2. During ...
... Frost action: freezing and thawing in cracks and pores in rocks, enlarging the cracks and pores— eventually, pieces of rock (called scree) break off altogether. Exfoliation (“onion skin weathering”): 1. During the day the sun heats up the surface of the rock causing the rock to expand. 2. During ...
MESOZOIC ERA IN CALIFORNIA
... a. By the end of Mesozoic (about 63 m.y) all elements of Mts. and Great Valley were established b. Limited mountain building in late Triassic to middle Jurassic time c. Major mountain building period occurred near close of Jurassic *best known in Sierra Nevada--so it is called the Nevadan Orogeny d. ...
... a. By the end of Mesozoic (about 63 m.y) all elements of Mts. and Great Valley were established b. Limited mountain building in late Triassic to middle Jurassic time c. Major mountain building period occurred near close of Jurassic *best known in Sierra Nevada--so it is called the Nevadan Orogeny d. ...
with Plate tectonics!
... The shape of South America and Africa look like they fit together Animal fossils such as Cynognathus or Mesosaurus Plant fossils such as the Glossopteris Fern ...
... The shape of South America and Africa look like they fit together Animal fossils such as Cynognathus or Mesosaurus Plant fossils such as the Glossopteris Fern ...
Chapter 2 lesson 1 Land formations (landforms): mountains, valleys
... 2. Internal Forces: cause volcanic eruptions that alter the landscapes by spewing molten rock material, gas, and ash. 3. Next to the California mountain belts are flat open valleys a. Water transports eroded material down from mountains to make the fertile soil of California great central valley. b. ...
... 2. Internal Forces: cause volcanic eruptions that alter the landscapes by spewing molten rock material, gas, and ash. 3. Next to the California mountain belts are flat open valleys a. Water transports eroded material down from mountains to make the fertile soil of California great central valley. b. ...
Minerals - TeacherWeb
... The three phases of matter are solid, liquid, and gas. A solid has a defined shape: it does not change. Minerals cannot be liquids or gases but can be found in and around liquids and gases. ...
... The three phases of matter are solid, liquid, and gas. A solid has a defined shape: it does not change. Minerals cannot be liquids or gases but can be found in and around liquids and gases. ...
4-2 Erosion NOTES
... influenced by: wind, gravity, water, glaciers Wind Erosion Wind can pick up, transport and deposit great amounts of sediment Generally only very small particles are transported by wind Humid areas and areas of high vegetation are less susceptible to wind erosion Sediments are bound together ...
... influenced by: wind, gravity, water, glaciers Wind Erosion Wind can pick up, transport and deposit great amounts of sediment Generally only very small particles are transported by wind Humid areas and areas of high vegetation are less susceptible to wind erosion Sediments are bound together ...
Minnesota Rocks box - University of Minnesota Duluth
... Thin layers of iron-formation occur within the approximately 2.7 billion year old greenstone lava of northern Minnesota. The term is a contraction of “iron-bearing formation,” which is precisely what it is—a rock having in places as much as 30 percent iron. Iron-formation formed as iron-rich particl ...
... Thin layers of iron-formation occur within the approximately 2.7 billion year old greenstone lava of northern Minnesota. The term is a contraction of “iron-bearing formation,” which is precisely what it is—a rock having in places as much as 30 percent iron. Iron-formation formed as iron-rich particl ...
How do we know if a rock is intrusive or extrusive?
... surface • Lava – molten rock above Earth’s surface • Extrusive (Volcanic) Rock – forms when lava solidifies on Earth’s surface – Pyroclastic Rock – extrusive rock made of material explosively ejected from a volcano ...
... surface • Lava – molten rock above Earth’s surface • Extrusive (Volcanic) Rock – forms when lava solidifies on Earth’s surface – Pyroclastic Rock – extrusive rock made of material explosively ejected from a volcano ...
rocks and rock- forming processes
... clastic sediment to form clastic sedimentary rocks. Clastic sedimentary rocks are comprised of particles generated during weathering and then transported to a depositional site by water, wind, or glaciers. Compaction under the weight of accumulated sediment and precipitation of cementing minerals be ...
... clastic sediment to form clastic sedimentary rocks. Clastic sedimentary rocks are comprised of particles generated during weathering and then transported to a depositional site by water, wind, or glaciers. Compaction under the weight of accumulated sediment and precipitation of cementing minerals be ...
1 - University of Arkansas
... a. a variety of sandstone b. formed by contact metamorphism c. formed by directed pressure d. all of the above 36. A clastic sedimentary rock with a angular gravel fraction composed of chert would be called a: a. conglomerate c. breccia b. quartz sandstone d. siltstone 37. Alluvial fans differ from ...
... a. a variety of sandstone b. formed by contact metamorphism c. formed by directed pressure d. all of the above 36. A clastic sedimentary rock with a angular gravel fraction composed of chert would be called a: a. conglomerate c. breccia b. quartz sandstone d. siltstone 37. Alluvial fans differ from ...
Unit 3 Review
... • Convection is the movement of matter due to differences in density that are caused by temperature variations; can result in a transfer of energy as heat. • Convection takes place in the Earth’s mantle. • Convection helps rocks move slowing in the mantle. (Cooler rocks sink and warmer rocks ...
... • Convection is the movement of matter due to differences in density that are caused by temperature variations; can result in a transfer of energy as heat. • Convection takes place in the Earth’s mantle. • Convection helps rocks move slowing in the mantle. (Cooler rocks sink and warmer rocks ...
Topic 10: GEOLOGY of SYDNEY REGION
... and conifers had just become abundant on earth, and accumulated into thick peat-like layers which with burial were progressively transformed into black coal. The Greta Seam, long mined at Cessnock and Kurri, is up to 11m thick, and occurs within sediments deposited in fresh water producing coals low ...
... and conifers had just become abundant on earth, and accumulated into thick peat-like layers which with burial were progressively transformed into black coal. The Greta Seam, long mined at Cessnock and Kurri, is up to 11m thick, and occurs within sediments deposited in fresh water producing coals low ...
Classification of Rocks
... far enough back into the history of a metamorphic rock you would find that the first ...
... far enough back into the history of a metamorphic rock you would find that the first ...
Title Page Photo “Come forth into the light of things, —William Wordsworth
... • When you have one or more elements in combination with carbon and oxygen, e.g. – Calcite (Calcium carbonate – CaCO3), the main mineral in ...
... • When you have one or more elements in combination with carbon and oxygen, e.g. – Calcite (Calcium carbonate – CaCO3), the main mineral in ...
Chapter 12 - Faculty Server Contact
... unconformity contact are parallel with no discernable erosion, but whose ages are vastly different. Nonconformity: an unconformity developed between sedimentary rock and older igneous or massive metamorphic rock that has been eroded prior to being covered by sediments. ...
... unconformity contact are parallel with no discernable erosion, but whose ages are vastly different. Nonconformity: an unconformity developed between sedimentary rock and older igneous or massive metamorphic rock that has been eroded prior to being covered by sediments. ...
Clastic rock
Clastic rocks are composed of fragments, or clasts, of pre-existing minerals and rock. A clast is a fragment of geological detritus, chunks and smaller grains of rock broken off other rocks by physical weathering. Geologists use the term clastic with reference to sedimentary rocks as well as to particles in sediment transport whether in suspension or as bed load, and in sediment deposits.