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Homework Th 3rd Feb 2011

February 3, 2011 Comments off

Homework is for Alex, Richard, James, Stephen, Max, Chris & Tushar to post 5 useful facts about their assigned ore.

Everybody (including the above!) to answer questions 1-5 on p189. For Q4, just pick one factor and DISCUSS it, don’t just state it – try to explain how it all works.

Mr. B

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Categories: Homework

What do you want to revise?

January 12, 2011 Comments off

Remember to let me know this on Friday’s lesson – if you are missing it because of a test, pass your requests via a friend.
I’ve attached the pictures of microfossils to this post – if you can identify them you’re doing well.

Categories: Homework

Chrono Stratigraphic

November 17, 2010 Comments off

Wikipedia definition!

Chronostratigraphy is the branch of stratigraphy that studies the age of rock strata in relation to time.

The ultimate aim of chronostratigraphy is to arrange the sequence of deposition and the time of deposition of all rocks within a geological region, and eventually, the entire geologic record of the Earth.

The standard stratigraphic nomenclature is a chronostratigraphic system based on palaeontological intervals of time defined by recognised fossil assemblages (biostratigraphy). The aim of chronostratigraphy is to give a meaningful age date to these fossil assemblage intervals and interfaces.

Another explanation:)

The term chronostratigraphy refers to that aspect of the field of stratigraphy dealing with temporal (time) relations and ages of rock bodies. Chronostratigraphic classification in the field of stratigraphy organizes rocks on the basis of their age or the time of their genesis.

  • Chronostratigraphic units are defined as bodies of rock—stratified and non-stratified—that formed during a specific interval of geologic time.
  • Chronostratigraphic units are thus special rock bodies that are conceptual, as well as being material. They can be thought of as the subset of rocks formed during a specified geologic time interval.

For example, the Devonian System is the set of all rocks (sedimentary as well as igneous and metamorphic), wherever they occur on Earth, formed during the Devonian Period.

The boundaries of this conceptual set of rocks are synchronous (i.e., are the same age everywhere) and the Devonian System is isochronous (i.e., the same age and age span everywhere). When written with a proper noun, e.g., Devonian System, both parts of the name of any chronostratigraphic unit are capitalized.

THESE ARE THE GEOLOGICAL TERMS

  • Erathem—Corresponding geochronologic term: Eon; Example: Phanerozoic
  • Eonothem—Corresponding geochronologic term: Era; Example: Paleozoic
  • System—Corresponding geochronologic term: Period; Example: Devonian
  • Series—Corresponding geochronologic term: Epoch; Example: Late Devonian
  • Stage—Corresponding geochronologic term: Age; Example: Frasnian
  • Substage—Corresponding geochronologic term: Subage

 

 

 

Categories: Homework

Radiometric dating – Homework 3rd Nov

November 3, 2010 Comments off

Answer your assigned question – report back first thing on Friday’s lesson when we’ll update the attached summary. [EDIT] Here’s the updated one with answers.

Categories: Homework

Homework October 22nd

October 22, 2010 4 comments

Over half-term, thoroughly read pages 274-279 and for each double page spread, come back with a good question – even better if your 3 questions are comments to this post.

Categories: Homework

End of half term test – Mr. B’s stuff

October 21, 2010 1 comment

Attention Harry & Joe!
Attached to this post is the end of half term test on Mr. B’s stuff. Harry and Joe, please complete it over half-term. You are allowed 30 minutes but no books/notes. You’re on your honour! Hand it in first day back and then I’ll mark it and attach the markscheme.
This is a link to the document – download, print out and sit the test
Mr. B

Categories: Homework

Homework Wed 13th Oct

October 13, 2010 Comments off

Make notes on the Permian (half a page) and the K-T extinction events (half a page), focussing on what became extinct and the possible reasons for each extinction.
Then, revise all Mr. B’s work up to mass extinctions for a test on Thursday 21st. We’ll be doing past papers on Friday and in Monday’s lesson.

Categories: Homework