chapter 11 late paleozoic events l.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
Chapter 11 – Late Paleozoic Events PowerPoint Presentation
Download Presentation
Chapter 11 – Late Paleozoic Events

Loading in 2 Seconds...

play fullscreen
1 / 12

Chapter 11 – Late Paleozoic Events - PowerPoint PPT Presentation


  • 203 Views
  • Uploaded on

Chapter 11 – Late Paleozoic Events. 160 million years Three periods Devonian Mississippian Pennsylvanian Permian By the end of the Permian, Pangaea was completely assembled from the six plates that fled Rodina. The Seas Come In, The Seas Go Out.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Chapter 11 – Late Paleozoic Events' - chidi


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
chapter 11 late paleozoic events
Chapter 11 – Late Paleozoic Events

160 million years

Three periods

Devonian

Mississippian

Pennsylvanian

Permian

By the end of the Permian, Pangaea was completely assembled from the six plates that fled Rodina

the seas come in the seas go out
The Seas Come In, The Seas Go Out

The end of the Early Paleozoic had much of North America above sea level and eroding.

At the beginning of the Late Paleozoic the seas were advancing again depositing sediment over the old unconformity.

Two Transgressions

Kaskaskia transgression

Absroka transgression

kaskaskia sequence oriskany sandstone
Kaskaskia Sequence – Oriskany Sandstone

As sea level rose the Oriskany Sandstone of New York, Pennsylvania, Virginia, and West Virginia are deposited. Important glass sand.

South of New York

Contains tourmaline, zircon, and rutile and lacks fast weathering minerals. Reworked.

New York

Contains less resistant minerals

Pyroxenes, hornblende, and biotite

Derived from igneous or metamorphic minerals; not re-worked sedimentary rocks.

chattanooga shale
Chattanooga Shale

Chattanooga Shale composed of silts and clays from erosion of Acadian highlands.

Contains no fossils, but does contain pyrite and disseminated carbon indicating deposition in stagnant, oxygen-poor water.

Later a thick deposit of limestones are deposited.

Last great Paleozoic flooding of North America

williston basin
Williston Basin

South Dakota and Montana to Canada

Arid climate reef-enclosed basins. Rock gypsum

Rock salt

Petroleum in reef limestones

Important Canadian oil source

paradox basin
Paradox Basin

Utah and Colorado

Flooded by Absaroka Sea

Early Pennsylvanian

Thick beds of halite, gypsum and anhydrite (waterless gypsum)

to the east a clash of continents
To the East: A Clash of Continents

Assembly of Pangaea

Baltica collides with N.A. to form northern Appalachian Mtns.

Avalon microcontinent collides with volcanic arc and then NW Africa to form the southern Appalachian Mtns.

the catskill clastic wedge
The Catskill Clastic Wedge

The tall, ancestral Appalachian Mtn’s are shedding sediments west (Catskill Clastic Wedge) and east (Devonian Old Red Sandstone).

Important natural gas deposits in sandstones/shales.