Glacier-borne Erratic
Erratics provide an important tool in characterizing the directions of glacier flows, which are routinely reconstructed used on a combination of moraines, eskers, drumlins, meltwater channels, and similar data. Erratic distributions and glacial till properties allow for identification of the source rock from which they derive, which confirms the flow direction, particularly when the erratic source outcrop is unique to a limited locality. Erratic materials may be transported by multiple glacier flows prior to their deposition, which can complicate the reconstruction of the glacial flow.
Read more about this topic: Glacial Erratic, Formation of Erratics
Famous quotes containing the word erratic:
“Success is an absurd, erratic thing. She arrives when one least expects her and after she has come may depart again almost because of a whim.”
—Alice Foote MacDougall (1867–1945)