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2. Mineral redox buffer - Wikipedia

   en.wikipedia.org/wiki/Mineral_redox_buffer

   The ratio of Fe 2+ to Fe 3+ within a rock determines, in part, the silicate mineral and oxide mineral assemblage of the rock. Within a rock of a given chemical composition, iron enters minerals based on the bulk chemical composition and the mineral phases which are stable at that temperature and pressure.

3. Rock-climbing equipment - Wikipedia

   en.wikipedia.org/wiki/Rock-climbing_equipment

   The rock-climbing equipment needed varies materially depending on the type of rock climbing being undertaken. Starting from the least equipment-intensive type of climbing, the general equipment needs are as follows: [1] Free solo climbing, and its deep-water soloing variant, require the least equipment as no climbing protection or ropes are used.

4. Ascender (climbing) - Wikipedia

   en.wikipedia.org/wiki/Ascender_(climbing)

   Ascenders are usually used in pairs on a single rope and offer similar functionality to friction knots, but are faster, safer and easier to use, [2] albeit still with consequences in weight and in security (as ascenders can, even with a locking carabiner, come off the rope, and fail by shredding the rope at high loads, rather than slipping and ...

5. Carabiner - Wikipedia

   en.wikipedia.org/wiki/Carabiner

   Center is a standard carabiner rating. Using a carabiner to connect to a rope. A carabiner or karabiner (/ ˌ k ær ə ˈ b iː n ər /), [1] often shortened to biner or to crab, colloquially known as a (climbing) clip, is a specialized type of shackle, a metal loop with a spring-loaded gate [2] used to quickly and reversibly connect components, most notably in safety-critical systems.

6. Maillon - Wikipedia

   en.wikipedia.org/wiki/Maillon

   A maillon with the gate open and closed. A maillon, maillon rapide or quick link is a metal link, similar to a carabiner. [1] Maillons have a threaded sleeve which tightens over a thread, as opposed to a hinged gate like a carabiner, making them stronger, but more difficult to use. [1]

7. Climbing harness - Wikipedia

   en.wikipedia.org/wiki/Climbing_harness

   Sit harness. A climbing harness is a piece of equipment that allows a climber to tie in to the safety of a rope. [1] It is used in rock and ice climbing, abseiling, and lowering; this is in contrast to other activities requiring ropes for access or safety such as industrial rope work (such as window cleaning), construction, and rescue and recovery, which use safety harnesses instead.