Advertisement

You are browsing the archive for structure Archives - Mountain Beltway.

11 October 2018

Q&A, episode 6

A reader asks about Callan’s source of inspiration, a fitting question given the advent of Earth Science Week, which this year has as its theme “The Earth as Inspiration.” Brace yourself for a tantalizing cavalcade of gorgeous images of patterns in rocks!

Read More >>

2 Comments/Trackbacks >>


28 September 2018

Friday fold: Big Cottonwood Fm., Slate Canyon, Utah

It’s Friday and that means it’s time for a fold. Today we head to Cottonwood Canyon, Utah, with reader Octavia Spencer, for a lovely antiform.

Read More >>

No Comments/Trackbacks >>


11 September 2018

Drawing geological structures, by Jörn Kruhl

After blogging about geovisualization, reader James Safranek alerted me to this new book about two of my favorite things: drawing and structural geology! I requested a review copy from the publisher, who kindly provided one. It’s great! This is “a whole book” about drawing and geology and specifically structural geology. As such, it’s not going to be as pertinent to every reader as it was to me. But I found …

Read More >>

No Comments/Trackbacks >>


7 September 2018

Friday folds: Continuing contorted Conestoga carbonates

The first Friday of September calls out for a fold. The Burle Business Park in Lancaster, Pennsylvania has an answer – several of them, in fact!

Read More >>

No Comments/Trackbacks >>


16 August 2018

A suite of deformational features in Lancaster limestones

In the Landisville Quarry, Lancaster, Pennsylvania, there is a quarry that cuts into Cambrian limestones. (The exact identity of these limestones is apparently a matter of some dispute, but that’s not going to stop us!) I visited the quarry in June on a field trip offered through the NAGT’s Eastern Section annual meeting. We witnessed multiple varieties of deformation there. First off, there was straight-up brittle extension, resulting in bedding-perpendicular …

Read More >>

No Comments/Trackbacks >>


15 July 2018

Chickie’s Rock, Pennsylvania

A virtual field trip to the deformed quartzites and metaconglomerates of Chickie’s Rock and Sam Lewis State Park in Lancaster County, Pennsylvania.

Read More >>

No Comments/Trackbacks >>


23 June 2018

Deformed conglomerate of Frog Lakes, California

Fifteen years after mapping deformed rocks of the Sierra Crest shear zone system in the high Sierra, a family vacation brings Callan back to the pre-batholith metasedimentary rocks which show a pronounced strain.

Read More >>

1 Comment/Trackback >>


1 June 2018

Friday fold: a quartet from Marli Miller’s website

Marli Miller is a senior instructor at the University of Oregon. She is the author of Roadside Geology of Oregon and (with Darrel Cowan) Roadside Geology of Washington. She’s also a very talented geological photographer. She launched a website recently to showcase her work and make it available for instructors: Geology Pics. After chatting with Marli a bit in Flagstaff at the Rocky Mountain / Cordilleran section meetings of GSA …

Read More >>

4 Comments/Trackbacks >>


26 March 2018

Raider of the Lost Anticlines

A solo hike in search of anticlines yields new outcrops and good views!

Read More >>

1 Comment/Trackback >>


1 March 2018

A GIGAmacro view of a cool outcrop in Scotland

As noted previously, the old way of viewing gigapixel imagery is no more. But there is a new, better way. The GIGAmacro company has a better viewing platform that can be used either with images uploaded to their server or  with pre-existing images that currently “live” at GigaPan.com. Here’s an example: a roadcut of limestone of the Grudaidh Formation (Durness Group) in the Northwest Highlands of Scotland, near Ardvreck Castle, …

Read More >>

2 Comments/Trackbacks >>