Vertical chemical zonation in ignimbrites is interpreted as recording incremental changes in the deposition and the zonation rarely correlate with flow unit boundaries and may occur within flow units.
42.
Vertical chemical zonation in ignimbrites is interpreted as recording incremental changes in the deposition and the zonation rarely correlate with flow unit boundaries and may occur within flow units.
43.
At one point it was speculated that such unusual vegetative zonation was the result of human activities such as the grazing of domestic animals or burning of the grasslands.
44.
The vegetation follows a fairly strict altitudinal zonation, as a result of the climate, and implying a similar zonation of fauna, although this is often less strict.
45.
The vegetation follows a fairly strict altitudinal zonation, as a result of the climate, and implying a similar zonation of fauna, although this is often less strict.
46.
Moore and Cranwell also produced zoological research, writing a highly original and influential joint paper on the intertidal zonation of the Poor Knights Islands that was published in 1938.
47.
The adrenal cortex exhibits " functional zonation " as well : by virtue of the characteristic enzymes present in each zone, the zones produce and secrete distinct hormones.
48.
This decrease in temperature and increase in rainfall result in altitudinal zonation, where the land can be divided into life zones of similar climate and ecology, depending on elevation.
49.
This " anatomic zonation " can be appreciated at the microscopic level, where each zone can be recognized and distinguished from one another based on structural and anatomic characteristics.
50.
In 1974, Keith Young concluded, based on ammonite zonation, that the formation ranges from late Upper Aptian into the Lower Albian, about 115-105 million years old.
