Welcome to the 78th Daily Field Note! Here you find the top post of the day, one covering each scientific field that is included by Geopolis. Since these authors put a lot of effort in writing a good post they surely deserve the extra exposure.

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Science quote of the day:
"Science must not impose any philosophy, any more than the telephone must tell us what to say." ~ G.K. Chesterton

Geology: Precious metals on earth come from meteorites

Original post by @irza

:) hello steemians Some of the noble and rare metals in the world including platinum and iridium can show their presence in the Earth's crust and in iron meteorites and iron-iron meteorites that are chunks of large amounts of asteroids that have undergone a geological process early in the solar system.
Dr. Gerhard Schmidt from the University of Mainz, Germany, calculated about 160 metal asteroids that have a diameter of 20 km, which is estimated to have concentrations of these rare metals. The rare metals found in the Earth's crust are known as Highly Siderophile Elements (HSE). The Siderophile element is a group of transition metals that have a very high density bound to iron metal in solid or liquid conditions. The HSE group consists of rhenium (Re), Osmium Os), iridium (Ir), ruthenium (Ru), rhodium (Rh), platinum (Pt), palladium (Pd) and gold (Au).

Archeology: Mehrgarh is one of most important Neolithic Civilization located in Pakistan.

Original post by @munawar1235

Mehrgarh was situated near the Bolan River and the Bolan Pass. Bolan river was used to irrigate and Bolan Pass which was used for movement between Afghanistan and Baluchistan, Pakistan.

Mehrgarh was discovered by French archeologist couple; Francois Jarrige and Catherine Jarrige in 1974. During the excavation, they found evidence of village settlement and farming about 30KM from Sibi town in South Asia. There is not much details available about their religious beliefs and reforms about the Mehrgarh civilization. During excavation widespread plots are discovered. In 2004, the archaeological site of Mehrgarh was submitted to UNESCO to consider as World Heritage Site.

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