On 5/26/1976, a category F3 (max. wind speeds 158-206 mph) tornado 4.9 miles away from the city center injured one person and caused between $500,000 and $5,000,000 in damages. Richardson-area historical earthquake activity is slightly below Texas state average.6.5%. According to our research of Texas and other state lists there were 26 registered sex offenders living in Richardson, Texas as of October 14, 2015.
Bronzite is a variety of enstatite that is also associated with hypersthene, which contains silica, magnesium, oxygen, and iron; this is similar to the structure of the serpentine group of minerals. (Bronzite has more iron than enstatite and more magnesium (and less iron) than hypersthenes).
monocline (plural monoclines) ( 1 geology) A unidirectional dip in strata that is not a part of an anticline or syncline. ( 2 geology) A single flexure in otherwise flat-lying strata.