Crossbedding – some common terminology
This post is part of the How To… series Eocene fluvial tabular crossbeds exposed along MacKenzie River, northern Canada Crossbeds […]
Interpreting ancient environments
Measuring and representing paleocurrents
This post is part of the How To… series Identifying sedimentary structures that indicate paleocurrent directions is an important task
Identifying paleocurrent indicators
Sedimentary structures that indicate paleoflow. Measuring and plotting paleocurrent indicators are treated in a separate post. This post is part
Determining stratigraphic tops
a.k.a. Stratigraphic way up, or younging direction This post is part of the How To… series Stratigraphy is all about
Stereographic projection – unfolding folds
Restoring paleocurrent trends to their pre-deformation orientations This post is part of the How To… series Sedimentary strata are commonly
Stereographic projection – the basics
Plotting the orientation of a plane on a stereonet; finding strike and dip from two apparent dips This post is
Solving the three-point problem
A graphical method for solving the three-point problem This post is part of the How To… series Mapping is the
Measuring dip and strike
How to measure dip and strike This post is part of the How To… series If we had to designate
Beneath the ice; Greenland’s bedrock
Greenland is giving up its secrets, one at a time Greenland’s ice-sheet is a significant component of the global ice-ocean
Marie Tharp and the mid-Atlantic rift; a prelude to plate tectonics
The history of science is littered with the misplaced contributions by women, contributions that at best were pushed aside or