Folded quartzite and phyllite, with axial planar cleavage in the phyllite South limb of the Baraboo (Wis.) syncline Image by author
Tag: geology
Tourmaline on lepidolite
Tourmaline on Lepidolite Cruzeiro Mine; Mina’s Gerais, Brazil Image by author
GSA 2015
Had a really great time presenting my research at the North-Central Geological Society of America meeting in Madison, WI today!
Cross bedding
Here’s some lovely cross bedding in the ~1.7 Ga quartzite from Baraboo, WI!
Airplanes are great for seeing the awesome dendritic and meandering patterns of rivers ✈️
Mars | Hemispheric Dichotomy
The most significant crustal feature on Mars is the hemispheric dichotomy–a physiographic divide between the southern hemisphere (heavily cratered highlands) and the northern hemisphere (relatively smooth plains). The southern highlands cover ~2/3 of Mars and are ~2–4 km higher than the northern lowlands. This area is composed of heavily cratered, relatively old geologic units mainly… Continue reading Mars | Hemispheric Dichotomy
Thornton Quarry, Illinois
The Thornton Quarry located near Chicago, Illinois is the site of a 420 million year old Silurian reef. The reef was formed in a shallow shelf, epicontinental sea environment, so the rocks of the quarry are filled with fossils! Many of the beds in the quarry are naturally gently tilted, and the structure has an… Continue reading Thornton Quarry, Illinois
The Lawrence Minute – Engaging Geology
The Lawrence Minute - Engaging Geology Really happy to be part of this video that showcases the geology department at my university! (Source: https://www.youtube.com/)
This is the t-shirt design that I made for my school’s geology department, you gotta love the geo puns!
Bornite<
Also known as “peacock ore” for its vibrant rainbow hues, Bornite is a copper iron sulfide (Cu5FeS4). Specimen from Mexico Image by author
Emily Zawacki, Ph.D. 