Sentence examples for ancient blocks from inspiring English sources

They constitute a part of a system of ancient blocks of mountains trending from southwest to northeast.

Most gem-quality diamonds are 1 billion to 3.5 billion years old, and originate at shallower depths, in the keels beneath the cratons, the ancient blocks of rock that form the hearts of the earth's continental masses.

Principal structural constituents were the Siberian (or North Asian) craton bounded on the east by a miogeosynclinal fold belt, a system of smaller ancient blocks, and a collage of terranes that had been attached to the craton from the east and southeast at different times.

More interventions followed -- this time underground, as the terrain beneath the tower was frozen and ancient blocks of stone conglomerate dating back to 150 years ago were extracted.

Evolutionary hierarchies were discernible within the assemblage of blocks, such that taxonomically widespread, and hence ancient, blocks could be distinguished from taxon-specific, more recent, ones.

Illegitimate recombination has a much greater chance to occur between relatively young duplicated blocks [ 61], or to recur between ancient blocks that are kept very similar by its recurrence [ 6, 62, 63].

The ancient block of H repeats, which we identified in the Xist consensus sequence, displays a high similarity to the 3' end of marsupial (M. domestica) LINE L1-7_MD L1.

This data suggests that linkage relationships seen on the human HOX-bearing chromosomes are not an outcome of ancient block or whole chromosome duplications and thus should not be taken as evidence for two rounds of polyploidization events (2R hypothesis).

However, due to the absence of a substantial number of ancient 2HOM blocks, the 2HOM blocks do not support a WGD in the last common ancestor of Phytophthora.

Province III (slightly old crust, TDM = 1.6 1.1 Ga) is characterized by ancient crustal blocks, such as the central Mongolian, Erguna, Dariganga and Hutag Uul Xilinhot blocks, which represent micro-continents and Precambrian basements in the southeastern CAOB.

Given that MRX genes are part of ancient conserved blocks, their over-representation on the X could be due either to an over-representation on the autosomal blocks that evolved into sex chromosomes, or the acquisition of more specialised function by genes with generalised expression.