connecticut geology

The land on either side of the Connecticut River Valley is less suitable for farmlands. The formation of this basin eventually refilled with soft fluvial and alluvial sediments. Unique varieties are found in practically every part of the state—and each makes its own contribution to the knowledge of the state's geology. Among them is the Stockbridge marble, rocks formed from the seafloor at the bottom of an ancient former ocean., Creative Commons Attribution-ShareAlike License, This page was last edited on 9 August 2019, at 19:52. The fault is currently inactive. There are many fine examples of metamorphic rock in the northwest hills, formed under immense pressures during continental collisions. Sedimentary rocks, cemented together from sand and mud, define the Connecticut Valley. Connecticut's Eastern border fault was created, a fault which begins in New Haven and stretches 130 miles up to Keene, New Hampshire. It could be because it is not supported, or that JavaScript is intentionally disabled. Still others formed deep beneath the earth's surface and are seen today as the massive granites along the southeast coast. Below are some field photos taken during my first few years exploring the eastern half of the state. Geologists look at rocks as if each one has its own story to tell. Igneous rocks, formed from molten volcanic rock that later cooled and hardened, are also common. 2016 | Connecticut's Official State Website, Department of Energy and Environmental Protection. The Face of Connecticut: People, Geology, and the Land. EASTERN CONNECTICUT GEOLOGY PHOTOS Eastern Connecticut has many spectacular outcrops of the metamorphic, polydeformed core of the New England Appalachians. Connecticut's diverse geology, combined with the state's small size, makes it an extraordinary natural laboratory. The "Great Unconformity" (above) is a place where relatively younger layers of sedimentary rocks lay atop older metamorphic bedrock. Connecticut Geology: How the Past Shapes the Presentis a unit covering Earth science concepts as they relate to the geology of Connecticut. The oldest reveal continental collisions so collossal they raised mountains thousands of feet high. During Ice Ages, glacial activity shaped much of New England’s landscape, eroding mountains, leaving glacial till scattered everywhere, and forming glacial lakes. It is in the north-eastern side of the country. It takes just a short drive in any direction to see that the geologic history of Connecticut is long and full of twists. Great Day Trips to Discover the Geology of Connecticut. Their layers kept a record the past that reveals details of the climate, plants and animals of two hundred million years ago. Connecticut's Geological Story Geology of CT State Parks Get Outside & Explore! extensional shear zone, Willimantic, CT One of the biggest glacial lakes of the time was Glacial Lake Hitchcock. Connecticut Rivers Map: This map shows the major streams and rivers of Connecticut and some of the larger lakes. Excerpted from Great Day Trips to Discover the Geology of Connecticut, by Greg McHone, Ph.D. Photo by Greg McHone. Photo by Greg McHone. Erosion of the Appalachian Mountains now exposes metamorphic rocks once very deep in the Earth's mantle and uplifted during this time period. The eastern section holds the shallow Proto-North American Terrane while the western section contains the Iapetos and Avalonian Terranes, which still holds remnants of glacial till and lack the soft fluvial sediments so prominent in the Connecticut River Valley region. It has been shaped by … They hope that put together their stories will complete a history of the earth and help us understand how it was that the world came to be as we see it today. Igneous rocks form the great ridges that form the backbone of the state and today offer some of the most spectacular local hikes. Connecticut is made up of several different bands of bedrock, each with their own unique geologic histories. At its greatest extent, one of these glaciers left behind a moraine which became today's Long Island. In barely 5,000 square miles, you can find rocks that are as much as a billion years old, others that are half a billion years old, and still others that are 200 million years old. The glacial lake left behind a soft, varved landscape, gathering silt and sand in the summertime due to the influx of glacial meltwater and clay in the wintertime as the lake froze until it was later drained. Some of the features on will not function properly with out javascript enabled. Connecticut is a US state. Learn More About UsUnderstanding Earth as a Coherent SystemWe examine Earth As part of the New England region, Connecticut has undergone much geologic change. The landscapecomponents of Connecticut include the N-S basalt ridges, Mesozoic sedimentary rocks, and the eastern and western terrane uplands flanking the … Great columns of stone mark times when the earth's crust cracked and split until floods of lava poured out over thousands of square miles. A GIS database of geologic units and structural features in Connecticut, with lithology, age, data structure, and format written and arranged just like the other states. Get the facts at As part of New England, Connecticut has undergone much geologic change shaped by plate tectonics, volcanism, and glacial activity. As part of New England, Connecticut has undergone much geologic change shaped by plate tectonics, volcanism, and glacial activity. During the early Triassic period, the super-continent Pangea was formed as the Iapetus Ocean closed up and the proto-North American continent collided with Avalonia, part of modern-day Africa. Most of these lakes and streams can be clearly seen on the Connecticut Satellite Image. In their forms, shapes and colors is evidence of colossal forces, locked for billions of years in a global tug-of-war, which has made and remade the face of the Earth over the vast expanses of deep time. The impetus for creating this unit came about as part of the re-design of the Hall of Minerals, Earth & Space at the Yale Peabody Museum of Natural History. DEEP COVID-19 Response, © About 200 million years after this collision and the formation of Pangea, during the middle of the Mesozoic Era, the Atlantic Ocean floor started spreading and great extensional forces were experienced, resulting in faulting. Geoscience We study how the Earth works as a planet, what its history has been, and how this knowledge can be put to good use. It formed when the Laurentide Ice Sheet retreated and glacial meltwater began to accumulate at the glacier's terminal moraine in Rocky Hill, Connecticut and back up into the Connecticut River. It seems that JavaScript is not working in your browser. Look at Connecticut rocks together and you have a geological story with the ingredients of a true epic. Click here for the latest updates on DEEP's response to COVID-19. Of course, some stories are more interesting than others—and few can rival Connecticut rocks for the stories they have to tell. The state is within the Atlantic Ocean Watershed and streams of the state flow in a southwards direction into Long Island Sound. This material may not be reproduced in any form or by any means, electronic or mechanical, including photocopying, recording, or by any information storage retrieval system, without written permission from the publisher Perry Heights Press.

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