Lab 3_Intro PP - Geologic Events Occur on time scales of...

Info icon This preview shows pages 1–8. Sign up to view the full content.

View Full Document Right Arrow Icon
Geologic Events Geologic Events Occur on time scales of millions of years Occur on time scales of millions of years Geologic time scale based on: Geologic time scale based on: relative age dating relative age dating absolute age dating absolute age dating
Image of page 1

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

View Full Document Right Arrow Icon
Neogene Paleogene 23 Million
Image of page 2
Geologic Dating Geologic Dating Absolute Dating: Absolute Dating: Gives precise time measurements, like being 20  Gives precise time measurements, like being 20  years old years old Relative Dating: Relative Dating: Relating one fact or event to another, like  Relating one fact or event to another, like  knowing your father is older than you, but  knowing your father is older than you, but  younger than your grandfather. younger than your grandfather.
Image of page 3

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

View Full Document Right Arrow Icon
Tools Used for Relative Dating Tools Used for Relative Dating Depositional sequences known as  Depositional sequences known as  strata strata Sequence stratigraphy Sequence stratigraphy Principles of stratigraphy Principles of stratigraphy Unconformities Unconformities Faunal succession Faunal succession
Image of page 4
Principles of Stratigraphy Principles of Stratigraphy Principle of Superposition :   younger strata  accumulate over older strata during the  deposition of sedimentary sequences Principle of Original Horizontality :    depositional sequences generally  accumulate in horizontal layers regardless  of the orientation of the underlying strata
Image of page 5

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

View Full Document Right Arrow Icon
Principle of Original Continuity :   sedimentary  sequences generally accumulate in widespread,  blanket-like deposits Principle of Crosscutting Relationships :    igneous intrusions  are younger than host units  they penetrate Principle of Inclusion :   rock fragments within  igneous units or depositional sequences are older  than their hosts Principles of Stratigraphy Principles of Stratigraphy
Image of page 6
Igneous Intrusions Igneous Intrusions Dikes Dikes
Image of page 7

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

View Full Document Right Arrow Icon
Image of page 8
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern