Rock Units. A lithostratigraphic unit is defined as a body of sedimentary, extrusive igneous, metasedimentary, or metavolcanic strata which is distinguished on the basis of lithologic characteristics and stratigraphic position (position in the rock sequence).The smallest lithostratigraphic rock unit is the bed.edimentary environments that started out side-by-side will end up overlapping one another over time due to sea level change (transgressions and regressions). The result is a vertical sequence of beds. The vertical sequence of facies mirrors the original lateral distribution of sedimentary environments.
The US Supreme Court, as an institution, is head of the Judicial Branch. The Chief Justice of the United States presides over the Court and is the head of the judiciary during his (or her) tenure, but the Associate Justices don't really play a leadership role.
Taft is the only president to ever serve as Chief Justice of the Supreme Court, making him the only person to have ever lead both the Executive and Judicial branches of the United States government. Taft considered his time as Chief Justice to be the highest point of his career, higher than that of being president.