Author Archives: mwilson

About mwilson

Mark Wilson is an emeritus Professor of Geology at The College of Wooster. He specializes in invertebrate paleontology, carbonate sedimentology, and stratigraphy. He also is an expert on pseudoscience, especially creationism.

Saying goodbye to the little island of Hiiumaa

mwilson July 3, 2011 10:25 am

KÄINA, ESTONIA–Today we had our last visit to our Silurian quarry working site (where I photographed the Paleofavosites coral fossil above, which by the way was preserved upside-down in the sequence), and then we had lunch in the town of … Continue reading →

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Wooster’s Fossils of the Week: Nummulitid foraminiferans (Eocene of the United Arab Emirates)

mwilson July 3, 2011 6:14 am

The Great Pyramids of Egypt are made primarily of a yellowish limestone. About 40% of that limestone is made of the fossil type pictured above. These are foraminiferans (single-celled organisms with shells) that lived by the countless billions during the … Continue reading →

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Using the iPad in geological fieldwork

mwilson July 2, 2011 9:55 am

KÄINA, ESTONIA–It is not yet one of my regular bits of field equipment, and I am certainly far from an expert with its use, but I can say a few things about the value of an iPad in geological fieldwork. … Continue reading →

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Tiny bit of wildlife on Hiiumaa

mwilson July 1, 2011 10:12 am

KÄINA, ESTONIA–This is a shout-out to our Wooster Geology colleagues currently working on the barren volcanic island of Iceland. We thought they might want a break from the bleak expanses of black basalt for a little color of wildlife from … Continue reading →

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Quarry time on Hiiumaa

mwilson July 1, 2011 10:00 am

KÄINA, ESTONIA–Rachel, Nick and I worked today in our lonely quarry on Hiiumaa measuring and describing this section of Lower Silurian (Llandovery, Rhuddanian) rocks and fossils. This is the fieldwork for Rachel’s Senior Independent Study.

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A second new Senior Independent Study project begins in Estonia

mwilson June 30, 2011 10:51 am

KÄINA, ESTONIA–Today we moved our geological investigations from Saaremaa to the island to the north: Hiiumaa. Our friend Olev Vinn of Tartu University then led us to an abandoned quarry in the Hilliste Formation (Lower Silurian). This made Rachel Matt … Continue reading →

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A few of the wildflowers on the alvars of Saaremaa Island, Estonia

mwilson June 30, 2011 7:21 am

KURESSAARE, ESTONIA–We have gotten to know the western coastline of Saaremaa very well and would like to simply share some of the gorgeous flowers found there. All of these grow in alvars, which are environments on limestone bedrock with thin … Continue reading →

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A little something for igneous petrologists

mwilson June 29, 2011 8:44 am

KURESSAARE, ESTONIA–Hard-rock geologists sometimes complain that I flood this blog with too many sedimentary rocks and fossils (and just wait until I get to the Estonian wildflowers!). There are actually quite a few igneous and metamorphic rocks on Estonia — … Continue reading →

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Saaremaa Silurian stromatolites studied

mwilson June 29, 2011 8:22 am

KURESSAARE, ESTONIA–Our fieldwork today at the Soeginina Cliff locality ended with an examination of a sequence of stromatolites near the top of the exposed Ludlow section. Stromatolites are layers of sediment accumulated by photosynthetic cyanobacteria. They are the earliest fossils … Continue reading →

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Thriving in the shingle: the story of Sea Kale

mwilson June 29, 2011 7:15 am

KURESSAARE, ESTONIA–A very common perennial plant at the foot of the cliffs we are studying in Estonia is Sea Kale (Crambe maritima Linnaeus). It is beautiful with large, thick leaves and central stalks with bursts of white flowers, each with … Continue reading →

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