The Alamo was built by Spanish settlers in the mid-1700s using Austin Chalk limestone from a quarry near present day Brackenridge Park. The Austin Chalk is known for its oil reserves in South Texas, ...

With crude oil trading at $46 per barrel, exploration and production companies are looking to the Austin Chalk geological layer as a cost-effective alternative. Crude oil is trading in the ...

Chalk, a white, soft limestone, was formed aeons ago when the shells of tiny marine creatures were compressed on the sea floor. Jordanian workers put coloured chalk ...

Artist and University of Kansas graduate Megh Knappenberger created six paintings of the university’s mascot, the Jayhawk, even incorporating rock chalk (limestone) in it. She was able to get ...