On this dive I blazed past Titanic depth at 12,000 ft and was only a third of the way down, and the numbers keep going up and up and up on the depth gauge. You just kind of look at them with a sense of disbelief, and you wonder if the bottom is ever going to be there..
Ocala Chert. Ocala Chert (also known as Coastal Plain Chert), is a beige to cream-colored rock that occurs as float across much of southeastern Alabama (e.g., Houston and Henry Counties). It was the lithic material of choice for people living in southeast Alabama for the manufacture of chipped-stone tools such as spear points and knives.
Chert, also known as flint, is one of the most abundant rocks in Missouri, and is composed of one of the most common minerals on earth. In fact, in much of Missouri you could say that chert is common as dirt.. Chert is a hard, fine-grained rock made up mostly of the mineral silica (SiO2). Silica itself contains the elements silicon and oxygen, two of the most abundant elements on earth.