GEOL101 pg 1-11, 801-810, A-8 to A-11

GEOL101 pg 1-11, 801-810, A-8 to A-11 - January 27 1-11,...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
January 27 – 1-11, 801-810, A-8 to A-11 Earth System: global interconnecting web of physical and biological phenomena involving the solid Earth, hydrosphere, and the atmosphere. Global change: the transformations or modifications of both physical and biological components of the Earth System over time. Unidirectional change involves transformations that never repeat. Evolution of the Solid Earth, Evolution of the Atmosphere and Oceans, Evolution of life – formation of core, mantle and moon Cyclic change repeats the same steps over and over, though not necessarily with the same results. Some types of cyclic change are periodic in that cycles happen with a definable frequency, others are not. Biogeochemical change – the exchange of chemicals among living and nonliving reservoirs. Global climate change – transformations/modifications in Earth’s climate over time. Anthropogenic contributions to global change. Physical Cycles The Supercontinent Cycle – the process of change during which supercontinents form and later break apart. Sea-Level Cycle – when sea level rises, shoreline migrates inland and low- lying plains in the continent become submerged. Sediment buries continental regions thereby changing their surface. When sea level falls, dry continents
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 02/23/2012 for the course GEOL 101 taught by Professor Mapes during the Summer '07 term at UNC.

Page1 / 3

GEOL101 pg 1-11, 801-810, A-8 to A-11 - January 27 1-11,...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online