Absolute dating of fossils
Absolute dating of fossils - Fort wayne free sex cams
Radiocarbon ages of organic matter associated with the fossil plant material are also consistently younger than 26 ka [4, 13], with the exception of one layer dated as older than 48 ka .Fossils in marine deposits are considered younger than 2 Ma , based on radiometric ages of volcanic rocks interbedded with the deposits .
—The question of age is a sensitive issue for creationists.
Volcanic outcrops in the Galápagos Archipelago do not appear to provide the wealth of specimens found in other fossil-rich localities around the world.
However, fossils are indeed present in the Galápagos Islands.
Topics being pursued by paleontologists include: a) documenting patterns in species diversity and morphological trends, with potential insight on the origination of the endemic fauna and flora [2, 15]; b) studying the impact on the ecosystem of the introduction of non-native flora and fauna, with implications for ecology and conservation [2, 10]; and c) reconstructing past climatic trends and events in the island and in the tropical Pacific ocean system [3, 4].
Implications for creationist models—Although not as iconic and well known as their living counterparts, fossils of the Galápagos Islands can indeed offer some valuable contributions to the discussion of origins when approached from a creationist perspective.
Here, small lakes and bogs, formed within inactive volcanic craters, can be found.
The sediments filling the bottom of these small depressions contain fossil plant material [3, 4].In the standard, long-age chronology these dates correlate with the very top intervals of the geologic column (Pleistocene and Holocene).In summary, a mixed approach of absolute and relative dating seems to suggest that Galápagos fossils formed during the most recent part of Earth history, being restricted to the top layers of the geologic column.The following points summarize some of the most significant considerations.One of the key question asked from a creationist perspective would be if the Galápagos fossils formed before, during, or after the biblical flood.These tunnels and fissures often contain sediment with fossil remains of terrestrial vertebrates .