Geologic Time

February 23rd, 2015

Announcements

• Two briefs are due by Thursday February 26th (Friday February 27th for Section 1)

• Post Test for Outcome 5: Earth History will be next week:

• Wednesday March 4th for Section 2• Thursday March 5th for Section 1• Your Research Artifacts will be DUE on the

same day as your Post-Test

A Little Review

• Four Laws of Stratigraphy • Law of Superposition of Strata: Oldest rock

layers can be found at the bottom of an undisturbed bed

A Little Review

• Law of Cross Cutting Relationships: An intrusion/extrusion is always going to be younger than the rock it cuts through

A Little Review• Index Fossils• Two things must be true about Index Fossils:– 1: They lived for only a “short” period of time – 2: They lived across a wide geographical area (they

lived almost everywhere in the world!

What if All of Earth History Was Played on a 24 Hour Clock??

• How many hours does a normal clock show?• What time did humans get here?• http://hmxearthscience.com/Warehouse/geol

ogy/earths_history/animations/Geologic%20Timescale%20Clock.swf

• Humans got here at 11:59 p.m.• We only got here a minute ago!

Regents Question

Divisions of Time

Precambrian (544 mya – 4.6bya)

Stromatolites

Fossil of stromatolites

Paleozoic Era (ancient)

Mesozoic Era (middle)

Cenozoic Era (recent)

Group A Group B Group C Group D Group E

Alimatou Sandeilis Daiana Antoneta Reyson

Henood Sharna Thanya Nathi Caroline

Misha Sadia Kimby Gabriela Katerina

Khady Maisha Megany Harold

Keyzie Obniel Robert

Unison Reading Groups Section 1

Group A Group B Group C Group D Group E Group FAnam Jubayer Ramzi Mosammat Dayana

Perla Ibrahim Jennifer Seme Victoria

Smarlyn Abdullah Maridania Keny Junior

Daze Sarmad Chris Humayra Kagbe

Yanvier Abdullah Besare Kaylin

Unison Reading Groups Section 2

Team 1 Team 2 Team 3 Team 4 Team 5

Thanya Megany Sandeilis Alimatou Sharna

Caroline Katerina Zoha Henood Maisha

Gabriela Kimberly Khady Daiana Sadia

Nathi Obniel Misha Keyzie Antoneta

Reyson Robert Harold Marbelin

Scarlet

Responsibility Teams Section 1

Team 1 Team 2 Team 3 Team 4 Team 5 Team 6Smaryln Ramzi Dajana Jennifer Chris Junior

Mikauly Geovani Anam Daze Victoria Sarmad

Maridania Abdullah N. Perla Besare Kagbe Abdullah Z.

Laura Ibrahim Blendi Yanvier Kaylin Jubayer

Mosammat Seme Humayra A. Francisco Humayera Z. Sumaiya

Responsibility Teams Section 2