Microtexture | Zircon grain | Palaeoenvironmenta | |
---|---|---|---|
Riachuelos | Palma Sola | ||
Mechanically-induced feature | |||
Abraded edge (abe) | X | XXX | Aeolian, saltation, collision |
Dual striated zircon (dsz) | X | XX | Saltation, collision, short transport |
Euhedral zircon with one side broken edge (bez) | XX | X | Aeolian, saltation, collision, short transport, storm record |
Crescentic gouge (crg) | X | Near shore, wave action | |
Arc-shaped step (as) and Linear step (ls) | X | XX | High-energy collision, aeolian, littoral zone, glacial zone |
Bulbous edge (ble) | XX | Aeolian, saltation, fluvial, dune | |
Reworked conchoidal fracture (rcf) | X | XX | High-energy collision, aeolian, littoral zone, nearshore subaqueous |
Collision fracture (cf) | XXX | High-energy collision, aeolian, littoral zone | |
Meandering ridge (mr) | X | Aeolian, littoral dune, subaqueous | |
V-shaped percussion crack (vs) | X | High-energy collision, gouging, littoral zone, deltaic, subaqueous, surf zone | |
Straight groove (sgr) | X | Littoral zone, wave action, saltation | |
Chemically-induced feature | |||
Solution and precipitation feature (s/p) | XX | XX | Diagenetic environment, high in contaminated sea water (alkaline fluid) |
Circular solution pit (csp) | XX | X | Intertidal zone, diagenetic, percolation of sea water |
Grain cavities (gc) | Diagenetic, percolation of sea water | ||
Delamination (dl) | X | X | Collision/diagenetic |
Silica pellicle (sp) | X | X | Starting stage of in-situ diagenetic, nearshore |
Adhered particle appears to be silica globule (ads) | X | In-situ diagenetic, silica saturated, low-energy | |
Silica flower (sf) and crystal overgrowth | X | Advanced stage of diagenetic environment, silica oversaturated nearshore, low-energy | |
Adhered particle (ad)b | XXX | XXX | Diagenetic, littoral, low-energy |