uwloo

EARTH 235Stratigraphic Approaches to Understanding Earth's History

Units
0.50
Faculty
Science
Subject
Earth Sciences

When it runs

  1. F24
  2. W25
  3. S25
  4. F25
  5. W26
  6. S26
  7. F26
  8. W27
  9. S27

Ran in 3 of the last 7 terms. Winter 2027: not on the schedule. Spring 2027: schedule not out yet.

An introduction to stratigraphic principles and methods used in deciphering geological history. Techniques of collecting surface and subsurface geologic data and representation of stratigraphic data. Procedures applicable to the classification and nomenclature of stratigraphic units using the North American Stratigraphic Code. The development of stratigraphic sequences as controlled by global and regional tectonics and sea level fluctuations. Interrelating aspects of Earth's physical, chemical, and biological history. Examples are drawn primarily from Canadian geology. Laboratory work will include construction and interpretation of various types of learning media such as traditional maps, cross sections, new physical and digital models, as well as extended reality.

Prerequisites

  • Complete 1 of the following
    • Must have completed the following:
      • EARTH121 - Introductory Earth Sciences (0.50)
      • EARTH121L - Introductory Earth Sciences Laboratory (0.25)
    • Must have completed at least 1 of the following:

Antirequisites

None listed.

Leads to

Fall 2026 sections

Enrolment from UW Open Data, which can trail Quest by up to two days. Instructors and rooms: Schedule of Classes.
SectionClassEnrolledMeets
LEC 001697870 / 80MW 13:00–14:20
LAB 101697934 / 40M 14:30–17:20
LAB 102698036 / 40W 14:30–17:20

Reviewed on UW Flow

29% liked it27% easy34% useful

From 21 ratings and 3 comments on UW Flow. The most helpful comments, quoted as written, without names. Read them all on UW Flow.

  • To be fair, Fall 2014 was the first time John Johnson taught the course, and he's a super nice guy in his office hours. Still, his lectures were awful, the labs were irrelevant, and the exams were long, hard, and trivial.

    Jun 2015 · didn’t like it · 1 found this helpfulOn UW FlowRemove this

  • John is very enthusiastic about the concepts taught in this course and has many different methods that he tries to get the students to understand the concepts. Most of the concepts were a continuation from 121 and 122, just with a lot more detail into the Earth history portion. You can do well in this course if you attend most lectures, and actually understand the concepts in the labs.
    The labs were a large portion of the mark, and the first few are quite tough, and they do mark decently hard. But once you understand what they’re looking for, you can easily get 80’s if you put the effort in and understand some of the ambiguous questions.
    The final exam was a bit tough, but we were…

    Jan 2024 · liked itOn UW FlowRemove this

  • Not the best way to present this type of course material.

    Oct 2014 · didn’t like itOn UW FlowRemove this

Discussed on r/uwaterloo

4 posts and comments in 4 threads mention EARTH 235, August 2013 to December 2024. Quoted word for word, newest first; each reply sits under the post and the comment that started its branch. Search r/uwaterloo for newer posts.

Fall 2019

Fall 2017

Any way to disable UWCourseLinker from posting? 16 points, 26 comments

“posting a reply to my comment I find the bot annoying.”

u/Jackhofmann: “PSYCH 483 PSYCH 484 PSYCH 485 PSYCH 486 PSYCH 490R PSYCH 499A PSYCH 499B PSYCH 499C PSYCH 621 PSYCH 630 PSYCH 677A PSYCH 704A PSYCH 704B PSYCH 707 PSYCH 710 PSYCH 714 PSYCH 717 PSYCH 720A PSYCH 721A …”

u/Jackhofmann: “… DRAMA 490 DRAMA 491 DUTCH 101 DUTCH 201 EARTH 121 EARTH 121L EARTH 123 EARTH 123L EARTH 231 EARTH 235 EARTH 260 EARTH 331 EARTH 342 EARTH 421 EARTH 436A EARTH 436B EARTH 440 EARTH 444 EARTH 458 EARTH 458L EARTH 461 EARTH 499 EARTH 625 EARTH 626 EARTH 627 EARTH 650 EARTH 653 …”

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Fall 2015

Spring 2013

Check it elsewhere for Fall 2026

Calendar versions

Undergraduate Calendar