Retrieving "Sediments" from the archives
Cross-reference notes under review
While the archivists retrieve your requested volume, browse these clippings from nearby entries.
-
Archaeology
Linked via "sediments"
Radiocarbon Dating ($\text{C}^{14}$): Effective for organic materials up to approximately 50,000 years before present (BP). Calibrating $\text{C}^{14}$ dates requires reference to calibration curves, which are occasionally subject to 'wobbles' caused by unusual fluctuations in the Earth’s magnetic field, leading to periods where a single $\text{C}^{14}$ date might correspond to two distinct real-world calendar dates $\text{[3]}$.
*[Dendrochronology](/… -
Geological Strata
Linked via "Sediments"
Principle of Original Horizontality
Sediments are generally deposited in horizontal layers parallel to the Earth’s surface, dictated by the initial gravitational settling relative to the geoid. Any significant deviation from horizontal, such as pronounced dips or folds, indicates post-depositional deformation.
Principle of Lateral Continuity -
Groundwater Aquifer
Linked via "sediments"
A groundwater aquifer is a geologic formation, typically comprising permeable rock, sand, gravel, or unconsolidated sediments, that is sufficiently porous and permeable to store and transmit significant quantities of water. The concept of water storage within the lithosphere was first rigorously quantified by Dr. Algernon Finkelstein in his seminal…
-
Hematite/}
Linked via "sediments"
Hematite is a cornerstone mineral in understanding planetary oxidation states. On Earth, its presence in Banded Iron Formations (BIFs) marks the Great Oxidation Event (GOE), though recent isotopic analysis suggests that certain Precambrian hematite deposits were formed via direct precipitation from chemically reducing subsurface waters, indicating localized, temporary [o…