We present balanced and restored cross sections across the western Cuba fold and thrust belt to illustrate its structure and tectonic evolution, based on the interpretation of multichannel seismic profiles, field data and balancing techniques. The NNW–SSE trending Soroa cross section intersects, from south to north, (1) the Los Palacios Basin, (2) the Sierra del Rosario antiformal stack, (3) the Bahía Honda thrust unit, (4) the frontal ∼3‐km‐thick imbricated thrust sheets, and (5) the foredeep basin. At depth, a duplex that links the Sierra del Rosario unit and the frontal imbricates is defined using the thickness of the cover thrust sheets of the imbricated North American margin. The minimum calculated shortening is of 130 km in a SSE or south direction to fit large‐scale plate tectonic reconstructions. However, a more allochthonous alternative using thinner cover sequences is also discussed, which restores the Bahía Honda unit 220 km to the south of its present position. Syntectonic deposits in combination with a forward kinematic model provide a good constraint for the tectonic evolution of the orogen. The internally deformed Bahía Honda unit overthrusted the North America margin cover successions during Danian and Selandian times (∼65.5–60 Ma), before the stacking of these cover rocks during Selandian and Thanetian times (∼60–56 Ma). The growth of a large antiformal stack beneath the Sierra del Rosario occurred at early middle Eocene (∼56–45 Ma), generating about 4 km of structural relief between the paleoisland of Cuba and the synorogenic seafloor before the final infill of the foredeep.
The authors review the literature on the economic benefits of a college education in general and a community college education specifically and describe efforts undertaken in several states to examine postcollege earnings of former community college students using unemployment insurance wage records. They include the results of research designed to analyze wage earnings of 841,952 students enrolled in 103 California community colleges who either completed a certificate or degree program during the 1991-92 academic year or left during that academic year after completing some course units. After adjusting earnings to 1995 dollars, the authors report percent changes in median annual earnings. Findings indicated that a positive relationship existed between number of units completed and percent change in annual earnings in the third year out of a community college. On average, associate's degree completers experienced a 59% earnings increase three years after graduating from community college.
This chapter examines the discussion surrounding a reliable transfer rate measure by outlining the major arguments advanced by scholars and researchers in thefield. Several traditional methods of calculating transfer rates are discussed and new ways of conceptualizing transfer rate definitions are introduced.
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