Compare Igneous RockSedimentary Rock. Clastic Sedimentary Rock.

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Presentation transcript:

Compare Igneous RockSedimentary Rock

Clastic Sedimentary Rock

Sedimentary Rock How do those layers form? Order or process: WeatheringErosionDeposition Cementation & Compaction

Mechanical Weathering Disintegration/rock broken into smaller pieces Disintegration – Frost Action Frost Action – Abrasion (river, glacial, sandy environment) Abrasion – Plants and Animals #2 Plants and Animals #2

Chemical Weathering Decomposition-rock’s minerals are changed into different substances. – Acid Rain – Oxidation Oxidation – Hydrolysis Hydrolysis – Caves Caves

Which minerals are susceptible? Chemical Weathering – Calcite Mechanical Weathering – Quartz, angular minerals

Chemical Weathering What affects the rate? Faster Chemical Weathering – Warm and Moist climate Faster Physical Weathering – Cold and Wet Climate

Erosion The transport of sediments/particles from a weathered rock by – Water – Wind – Glacier – Gravity

Water Distinguishing Characteristics: – rounded edges

Wind Distinguishing Characteristics – Flatten sand surfaces: Sand dune

Glaciers Distinguishing Characteristics – Striations-special scratch by minerals Striations

Effects of Erosion Landslide Mudslide

Evidence of stream Erosion

Evidence of Glacial Erosion U Shape Valley

Sorted vs. Unsorted

Factors of Deposition Size Density Shape

Two types of deposition Water - sortedsorted Glacier - unsorted

Alpine Glacier Slow moving stream of ice that flows within valley walls

Juneau Icefield in Alaska

Arrete cirque Horn

Continental Glacier Glacier that covers a large part of a continent Ex: Greenland, Antarctica

Glacial Depositional Features

Moraine and Till Till - Unconsolidated and unsorted rock material that is deposited by a retreating or melting glacier Moraine – The accumulation of glacial till

Drumlin Elongated whale-shaped hill formed by past glacial action as it moves over the till

Drumlins in NYS South ends of the Finger Lakes - northeast of Ithaca at the northern end of Cayuga (Rochester to Syracuse)

Erratics A large boulder that have been transported into an area by a glacier

Kettles and Kame Hollows left behind by melting ice as the last remnants of glaciers disappear

Kame Small coned shaped hill of sand and pebble. that are deposited by stream into the kettle

Complete Illustration When glacier melts, deposits slump down at the side and form long ridges - ESKER