VMS deposits are commonly associated with regionally developed iron- and (or) manganese-rich metalliferous sediment and
chert developed at the same time-stratigraphic horizon as the massive sulfide deposits.
Archeologists have found tools made of obsidian (volcanic glass) and
chert (fine-grained sedimentary rock) dating back to the Neolithic Period some 5,000 years ago in a coastal area in what is now Misamis Oriental province.
The sequence boundary is marked from the laterite beds, while maximum flooding surface are marked from the
chert beds.
The stone is
chert, a flint-like substance used to chip small razor sharp blades off (microliths) which were used by our ancient ancestors to build composite tools to hunt with.
"101 American Fossil Sites You've Gotta See " also features a short history of life on Earth, from microbes in 3-billion-year-old
chert to massive mammals of the Pleistocene ice ages.
Tools made of bone and
chert became more prevalent, such as scrapers, drills and tools for sewing and weaving.
Most of the material in and around the hearths is lithic, consisting of flakes and scrapers in local stone, as well as bifaces, points, knives, and various tools in grey-green
chert, quartz, quartzite, and Ramah quartzite (Robbins, 1989:10; Tuck, 2005: 31-32).
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chert, cheetah, cheer, cheater, cheat, chat, chart, char, cater, carte, cart, caret, care, arch, acre, ache, HEARTACHE Wordsquare: P.
"The stone tools uncovered at Llanfaethlu include
chert and flint, which are fine grained silica rich, glass like stones that can be fashioned into a variety of tools, for example knives, scrappers to prepare animal hides, and axes."
Along the way, these migrants availed themselves of the many outcroppings of
chert, a form of flint well suited for projectile points.
These analyses are ongoing, to date results indicate people occupying the site brought a stone toolkit that included non-local Tallahatta Sandstone and
chert. These curated tools were used at the site, resharpened, and discarded there.