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plates
Plate tectonics (from the Late Latin tectonicus, from the Greek: τεκτονικός "pertaining to building") is a scientific theory describing the large-scale motion of seven large plates and the movements of a larger number of smaller plates of the Earth's lithosphere, since tectonic processes began on Earth between 3.3 and 3.5 billion years ago. The model builds on the concept of continental drift, an idea developed during the first decades of the 20th century. The geoscientific community accepted plate-tectonic theory after seafloor spreading was validated in the late 1950s and early 1960s.
The lithosphere, which is the rigid outermost shell of a planet (the crust and upper mantle), is broken into tectonic plates. The Earth's lithosphere is composed of seven or eight major plates (depending on how they are defined) and many minor plates. Where the plates meet, their relative motion determines the type of boundary: convergent, divergent, or transform. Earthquakes, volcanic activity, mountain-building, and oceanic trench formation occur along these plate boundaries (or faults). The relative movement of the plates typically ranges from zero to 100 mm annually.Tectonic plates are composed of oceanic lithosphere and thicker continental lithosphere, each topped by its own kind of crust. Along convergent boundaries, subduction, or one plate moving under another, carries the lower one down into the mantle; the material lost is roughly balanced by the formation of new (oceanic) crust along divergent margins by seafloor spreading. In this way, the total surface of the lithosphere remains the same. This prediction of plate tectonics is also referred to as the conveyor belt principle. Earlier theories, since disproven, proposed gradual shrinking (contraction) or gradual expansion of the globe.Tectonic plates are able to move because the Earth's lithosphere has greater mechanical strength than the underlying asthenosphere. Lateral density variations in the mantle result in convection; that is, the slow creeping motion of Earth's solid mantle. Plate movement is thought to be driven by a combination of the motion of the seafloor away from spreading ridges due to variations in topography (the ridge is a topographic high) and density changes in the crust (density increases as newly formed crust cools and moves away from the ridge). At subduction zones the relatively cold, dense crust is "pulled" or sinks down into the mantle over the downward convecting limb of a mantle cell. Another explanation lies in the different forces generated by tidal forces of the Sun and Moon. The relative importance of each of these factors and their relationship to each other is unclear, and still the subject of much debate.
I put this set up together about a year ago. Amazing high quality. I wore it one trip to the range and it has just been sitting. Perfect for a guy who gets out and trains! Never been dropped. Fits me perfect - 6’1 275lbs. It is one size fits most too. Even my wife could wear it and she 5’3...
I established a while ago that the furthest I personally can shoot accurately using my AK with red dot is 150 yards. I can ring a steel plate consistently at that range when shooting from a rest. But anything beyond 150 yards with the AK is just wasting ammo for me. Recently I finally bought my...
Big boy/girl 3xl ….green 3-5xl black
$160 each OBO…. Preferably meet near me. Auburn Covington…..Redmond work week 1st shift hours
Been in storage….
Voodoo tactical light weight 4 panel
Only front and back plates—no side plate in this deal
LVL III base coat only I think March 2021
15 year...
New pair of Hesco L210 Special Rifle Threat Plates. These are curved, size large. Designed to be very light and stop the more common rifle cartridges such as 5.56 and 7.62x39. I bought the plates for $400 shipped and never wore them. They've been in storage since manufactured in July 2020 and...
Spartan Armor 550 Level III+ Coated Plates
Includes:
(2) 10x12 - 550 plates coated
(2) 6x8 - 550 plates coated
(2) Trauma pads
In box new. $400
Upon further investigating, I may have originally over priced it.
$250 Cash
FTF Portland
Only selling this to established members with good feedback.
Like new, CRYE SPC (large) with cummerbund and Molle Flap Panel. All Ranger Green (BFG mag pouches are not included) - $280.
One Battle Steel LV4 Multi-Curve (Battle Steel no longer offers level 4 multi-curve plates) - $140.
One Battle Steel Level 3+ Single Curve plate - $130.
New with tags. Agilite Plate Carrier in Multicam. Matching Multicam AMAP III backpack.
2 Level IV Standalone Hesco BAO Tactical branded 4400 SA-MC-M Hard Armor Plates included. New condition. Never used. Bought and placed in storage...
I have a very nice pair of Hardwire 10x12 Swimmers cut armor plates. These are the good stuff. Although these are thick, they are very very light. I am including a brand new Warrior Assault Systems Covert plate carrier with triple mag pouch. This is the ultimate low pro/under cover set up...
I've been trying to decide on some light weight (4lbs or less) plates to get but I have been having a hard time because I've read so many conflicting reviews. Here's what I'm looking for: light weight (ideally 3lbs or less but 4lbs can work too), no more than $1,000, comfortable, and rated for...
I have 4 old style ( no slot for case ejection) shell plates for my Hornady AP reloading press. The picture on the top showes the new type shell plate with the slot for the case ejection device. The bottom picture shows the old style plate with no slot.
Can some one cut the slot in 4 shell...
Body Armor Tactical 4400 SA-MC-M which are basically rebranded Hesco 4400MC
SAPI Cut, Multi Curve, Medium Size, 7.9lbs per plate.
NIJ 0101.06 IV
Mfg. Date 07-Jun-2022
Purchased late last year and sat in a box since then. 16lb is a bit too heavy for me.
$280 for the set. Accept Cash, Venmo...
I am upgrading and getting rid of my vest and helmet. Excellent condition. Barely used. I am 5'9 and weigh 195 lbs. It fits great. It is a mayflower brand vest. The plates are Delta IV Central Lake Armor Express and the helmet is Ceradyne Inc MPAC/MCIP. Tip of the spear stuff.
Hola all.
I've got some extra AR500 level III+ plates (10x12) for sale.
$120 each
2 swimmer cut plates (extra anti-spall buildup)
1 shooter cut plate (extra anti-spall buildup)
1 back plate
With the buildup, these are $179 each on the website before shipping.
Here's some tests/reviews...