Reading the Rocks! Geologists read layers of rocks like pages in a book! Each rock tells a story of the environment in which it formed! Tropical Ocean.

Slides:

Advertisements

Similar presentations

By Ryan Arthur and Kole Patton

Advertisements

Chapter 17: The History of Life Calif. Science standards 8e

Outine 17-1: The Fossil Record

9.1 The beginnings of geology

Petrified Remains Hard and rock like Hard and rock like Original material replaced by minerals Original material replaced by minerals Ex. bones, wood.

Sedimentary rocks form from earlier rocks.

Sedimentary Rocks are Formed from Earlier Rocks

How the Grand Canyon Was Formed Erosion- water, wind, and ice Volcanism Continental Drift Erosion- ice will harden and make the land expand. When the.

Canada UNIT 2: Physical diversity Chapter 4:Geologic History.

Determining the Age of Rocks

How can rocks be correlated? And Geologic Time Scale Interpreting Earth’s History.

Copyright Pearson Prentice Hall

Time and delaware. HISTORY OF DELAWARE Section Goals Where does Delaware fit into the big picture of plate tectonics? What is the geologic history of.

The geologic time scale n The earth’s history is divided into four eras: Precambrian - beginning when earth was formed (4.6 billion years ago) and ending.

Features of depositional environments

Geology A Peak at Earth’s History. The Key to the Past is the Present Uniformitarianism –is the assumption that the natural processes operating in the.

HISTORY OF LIFE Chapter 14. The Record of Life Ch. 14, Sec 1.

Weather And Erosion Project By Taylor, Hannah, and Aaron.

Fossils REMAINS OF LIVING THINGS THAT HAVE BEEN BURIED BY SEDIMENT. SEDIMENT HARDENS PRESERVING SHAPE OF ORGANISM.

2. Soil – top layer of the Earth’s surface. It is a mixture of living and nonliving material. ~ Living Material: plants grow best in dark soil that has.

Table of Contents Chapter Preview 8.1 The Rock Cycle

Historical and Stratigraphic Analysis of the Grand Canyon By: Jake Halfhill.

Geologic Time Scale.

SOILS The weathering of the Earth’s surface produces soil. Adapted from a Soils PowerPoint from Oakland Junior High School in Columbia, Missouri:

READING THE ROCK RECORD. relative time: events are in sequence, but no actual dates absolute time: identifies actual date of event.

Igneous Rocks form from Volcanic (surface)… …or Plutonic (subsurface) activity.

Why learn about Sedimentary Rocks Source of building materials Source of fossil fuels (oil,coal,etc) Fresh water source Evidence of past surface conditions.

Define the following terms at the top of your notes for Ch 21!

Core 1. -the center of the Earth 2 Mantle 3 the middle of the Earth made up of molten (melted) rock 4.

How can rocks be correlated? And Geologic Time Scale Interpreting Earth’s History.

Chapter 9 Fossils: Sections 2, 3, 4, 5 in Brief

The Grand Canyon NATIONAL PARK By Allyson Curran.

Quick-write Why do you think some rocks fizzed with acid?

How do we measure the Earths Age?

Fossil Lab: Grand Canyon. A Little Photo Gallery from the Canyon….

Ch 14.1 The record of life You will … 1. examine how rocks and fossils provide evidence of changes in Earth’s organisms 2. correlate the geographic time.

Chapter 5.  SPI Compare fossils found in sedimentary rock to determine their relative age. I can:  Compare fossils found in sedimentary rock.

Daily Warm-Up Exercises

EVOLUTION The History of Life Lecture 11 Southern Boone County HS College Biology Mr. Palmer.

Fossils & The Geologic Time Scale. Fossils Preserved remains or traces of an organism that lived in the past. Fossils are formed when organisms die and.

READING THE ROCK RECORD. relative time: events are in sequence, but no actual dates absolute time: identifies actual date of event.

Geologic Timeline p ; Fossils Fossils  From the fossil record, paleontologists learn:  the structure of ancient organisms  their environment.

The Geologic Time Scale A History of Earth and Life.

Geologic Timeline. Fossils  From the fossil record, paleontologists learn:  the structure of ancient organisms  their environment  the ways in which.

Drawing from the Past and Building on that Knowledge By Chris Cumashot, Pocahontas County Angela McKeen, Wetzel County Place students in groups of three.

Geologic Time Scale. What are your observations?

Slide 1 of 40 The Fossil Record. Slide 2 of 40 Fossils and Ancient Life What are fossils? What are fossils? Preserved remains of ancient organisms Preserved.

Mississippi River Valley Fossils Around the Twin Cities Summit Avenue and Great River Blvd, St. Paul.

Determining the Age of Rocks Relative Age of Rocks.

Fossils Remains of living things that have been buried by sediment. Sediment hardens preserving shape of organism.

Principles of Geology Mr. Halfen Jan

The Geologic Time Scale

Copyright Pearson Prentice Hall

Lesson 2 Date: LT: I can make observations, analyze data, and identify patterns to make inferences about the history of a place. Sponge: What is the.

DO NOW Pick up review. Turn in vocabulary.

Copyright Pearson Prentice Hall

Geological time, Fossils, & Dinosaurs

The Geologic Time Scale

The Fossil Record (Ch 19.1) Unit 5: Evolution.

The Fossil Record Section 3

SEDIMENTARY ROCKS.

Unit 10 Lesson 2 What Was Ancient Earth Like?

Geological Time Scale.

Copyright Pearson Prentice Hall

Chapter 9: A View into Earth’s Past

Geologic Time Notes By studying the characteristics of rocks and the fossils within them geologists can… interpret the environments in which the rocks.

Determining the Age of Rocks

Presentation transcript:

Reading the Rocks! Geologists read layers of rocks like pages in a book! Each rock tells a story of the environment in which it formed! Tropical Ocean Beach & Near Shore River Channel Floodplain Forest

Volo Bog… a book waiting to be read! A good example?

As Volo Bog filled in with silt and clay over the years… Tiny grains of pollen from nearby plants drifted into the bog.

Spruce Pollen dominates the lowest sample… Elm and Ash dominate the next sample… Oak Pollen forms much of the next sample… Oak and Grass Pollen are the most common here… And Ragweed joins the Oak and Grass pollen in the last 200 years.

When you read a book of geologic history… …you may read something like : 300 million years ago, a tropical ocean washed the shores of a forested river floodplain… How do geologists KNOW that???

Reading the Rocks! Imagine an area where the landscape is fairly level, and all the rocks are flat-lying… Exposures of bedrock occur here and there… We can collect samples of the bedrock from those exposures!

Here’s our field area… From a location in the SW, we collect.. N …a carbonate rock with abundant seashells.

We find similar rocks here... N …and here.

These rocks clearly represent… N …a shallow marine environment!

Here we find a dark, fine-grained rock. N Leaves within a fined- grained rock…? A forested muddy floodplain? …and another.

Here we find a coarse- grained rock composed of various minerals. N And here and here… Sand bars in river channels?

The sediments and other evidence lead us to hypothesize… N …a delta system entering a shallow tropical ocean!

We have reconstructed our ancient landscape… N …Millions of years ago, a river flowed through muddy, forested floodplain and entered a shallow tropical ocean!

Vishnu Schist Bright Angel Redwall Supai Kaibab Toroweap Coconino Mountain Building Shore sand Off shore Land\Marine Marine Shallow Sea The Grand Canyon rocks! It really does! Desert

MESOZOIC PALEOZOIC Cretaceous Jurassic Triassic

CENOZOIC MESOZOIC

Geologic Map Oldest Youngest Misconception!!! The geologic map shows the units side-by- side! How can we say one is older and the other is younger? Geologic Cross-Section