landscapes of new york
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3 Major Classifications: What are landscapes? 3 Major Classifications: Mountains Plains / Lowlands Plateaus / UplandsTRANSCRIPT
Landscapes of New York 3 Major Classifications:
What are landscapes? 3 Major Classifications: Mountains Plains /
Lowlands Plateaus / Uplands New York has all three! Notice the
Catskills are part of a plateau, and are not really mountains
Mountains / Highlands At least 300 meters above the surrounding
land.
Created by a tectonic collision between two landmasses (Orogeny).
Characterized by distorted rock structures (metamorphic bedrock):a
result of the pressures applied during collision. View of high
peaks region from top of Whiteface Mt. Plains / Lowlands Large
areas of flat land at low elevations.
Lots of gravel, sand and clay. HOME SWEET HOME! Plateau / Uplands
Large areas of flat land at high elevation.
Usually flat, horizontal, sedimentary rock structures. Check your
note sheet now
Landscapes Mountains Plateaus Plains Landforms are the result of
the interaction of tectonic forces and the processes of weathering,
erosion, and deposition. What tectonic events and surface processes
were occurring during these times? Adirondack High Peaks Correlate
page 2 to page 3 of your ESRT What was happening in NY during the
Middle Proterozoic? Correlate pages 2 & 3 to pages 8 & 9.
View of high peaks region from top of Whiteface Mt. View of high
peaks region from top of Whiteface Mt. Observation tower and
weather station at the top of Whiteface Mountain. No horizontal
layering blocky, chunky, jointed metamorphic rock.
Sharp arrete ridges and glacial cirque on Whiteface Mt. Isolated
garnet crystals like this one, tell us the rock has been subjected
to a lot of heat and pressure (metamorphism). Whiteface anorthosite
(a rock composed mostly of plagioclase feldspar) with a large
crystal of red garnet (left of lens cap). Anorthosite; composed of
large crystals of labradorite feldspar (another clue of
metamorphism).
Anorthosite composed of large crystals of labradorite feldspar,
near Tupper Lake, NY. Distorted bedrock structure result of
compression forces during the collision of landmasses that created
the supercontinent that came before Pangea. Letchworth Gorge
Correlate page 2 to page 3 of your ESRT What was happening in NY
during the Devonian? Correlate pages 2 & 3 to pages 8 & 9.
During the Devonian the western parts of NY are underwater
During the Devonian the western parts of NY are underwater.The
Acadian orogeny occurs mostly to the North (Maine, Newfoundland,
Greenland, etc). The rising of those mountains produced a lot of
erosion of the softer surface sedimentary rocks and the Catskill
delta was formed. Is this a true mountainous region? Elevated
sedimentary rocks being worn down by running water
View of Middle Falls, Letchworth State Park. Watkins Glen These and
other marine fossils tell us that the area was once covered by a
shallow sea.
Trace fossils in Upper Devonian marine siltstone, Watkins Glen.
Watkins Glen Sedimentary rocks, at fairly high elevations,being
worn down by running water
Watkins Glen Take Us Home! What NYS Landscape do we live in?
Hudson-Mohawk Lowlands Shawangunk ridge viewed from Minnewaska
State Park. Cross section from Hudson River to Catskill Mts. Notice
the layering in the rocks
Shawangunk conglomerate in cliffs near Lake Mohonk. Conglomerate
rock from the Catskills
Conglomerate rock from the Catskills.The Catskills are made of
sedimentary rocks, not metamorphic rocks! Long Island Correlate
page 2 to page 3 of your ESRT Correlate pages 2 & 3 to pages 8
& 9. Caumsett State Park, Lloyds Neck, LI
Pleistocene Sands & Gravels Cretaceous clays exposed at
Caumsett State Park Cretaceous Clay Loess Glacial till Glacial
deposits exposed in beach cliff at Caumsett State Park