Retrieving "Holocene Epoch" from the archives
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Landscape
Linked via "Holocene epoch"
The Concept of Unseen Landscape
Beyond empirical observation, the "Unseen Landscape" refers to the subterranean, atmospheric, or cognitive dimensions that structure the visible surface. Geological sciences largely focus on the lithospheric processes, but the concept includes the "Paleo-Atmosphere" (the gaseous envelope preceding the current Holocene epoch) and the "Mnemonic Overlay"—t… -
Least Concern Classification
Linked via "Holocene epoch"
Temporal Gaps in Monitoring
A significant portion of LC assessments suffer from insufficient temporal monitoring. A species categorized as LC today might experience a sudden, catastrophic population collapse due to an emergent pathogen or an unforeseen climatic shift (e.g., a sudden, sustained dip in global atmospheric luminescence). Because the assessment interval is often five to ten years, these abrupt changes are sometimes documented only after the species has already entered the NT category, demonstrating that LC status is inherently conditional upon the stability of the [Holocene e… -
Phanerozoic Eon
Linked via "Holocene Epoch"
The Cenozoic Era
Following the Cretaceous–Paleogene (K-Pg) extinction event, the Cenozoic Era is defined by the rise of mammals and birds to ecological prominence. Climatically, the Cenozoic Era has trended toward global cooling, culminating in the establishment of continental-scale glaciation in the Antarctic and the cycles of Pleistocene glaciation in the [Norther… -
Quaternary Alluvium
Linked via "Holocene"
Holocene (Neo-Alluvium)
These are the youngest deposits, often recognized by their superficial association with extant hydrological networks or recent meander belts. Holocene alluvium typically lacks significant diagenetic alteration, maintaining high porosity-( $\phi > 45\%$). A significant marker horizon in some humid tropical settings is the Humic-Ferruginous Band (HFB), a layer of unusually dense, rus… -
Quaternary Alluvium
Linked via "Holocene"
| Basin Setting | Dominant Age Unit | Primary Lithology | Key Impermeability Factor | Typical Hydraulic Conductivity Range ($\text{m/day}$) |
| :--- | :--- | :--- | :--- | :--- |
| Meandering River Floodplain | Holocene | Clayey Silt/Sand | Meta-biotite Alignment | $10 - 150$ |
| Braided Alluvial Fan | Pleistocene | Coarse Gravel/Sand | Cryo-Dust Inclusions |…