Here’s some lovely cross bedding in the ~1.7 Ga quartzite from Baraboo, WI!
Tag: science
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
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
Trilobites
This is my pet trilobite. His name is Teddy. He’s been dead for probably around 400 million years, and I believe he’s a Devonian-aged specimen from Morocco (though I’m not entirely sure). Back when he was alive, Teddy and his other trilobite friends were among the dominant Paleozoic fauna but finally went extinct during the… Continue reading Trilobites
Volcanism on Mars
Mars is home to Olympus Mons (pictured above), the largest volcano in the solar system. Rising 21-24 km from the surrounding area, Olympus Mons is the dominant spot in the Tharsis region, which is the largest topographic feature on the planet. The Tharsis volcanic province covers close to 25% of the planet’s surface and houses… Continue reading Volcanism on Mars
Marsday Tuesday
Welcome to a new series, “Marsday Tuesday!” Tuesday is named after Mars (the Latin name is dies Martis “day of Mars”), so each week on Tuesday, we’ll be sharing some important features, interesting research developments, and factoids on our friendly solar system neighbor, Mars! Let’s start off with a basic Mars breakdown to see how similar/different it… Continue reading Marsday Tuesday
Geology of the Indiana Dunes
Located in northwestern Indiana along the southern shore of Lake Michigan, the Indiana Dunes are a fantastic display of aeolian (wind) processes at work. Incredibly tall sand dunes line the shores, and dune fields from former lake highstands extend even further back away. These impressive ‘beach mountains’ originated from glacially transported sediment post-last glacial maximum… Continue reading Geology of the Indiana Dunes
Visited the Ben E. Clement Mineral Museum in Marion, Kentucky the other day and found a friend among the quartz!
Emily Zawacki, Ph.D. 