According to foreign media reports, an international team of geological scientists led by Professor Silke Voigt of Frankfurt University, Professor Ireneusz Walaszczyk of Warsaw University and Dr. André Bornemann of LBEG conducted a thorough investigation on the 40-meter geological stratigraphic sequence of the limestone quarry in front of Fort hassell. The researchers determined that this is the only seamless sequence between Turonian and konya, so it represents a perfect rock sequence, which can serve earth scientists all over the world.

As a reference for their research-global chronostratigraphic unit boundary stratotype profile and point (GSSP), or "golden nail" in earth science jargon.

Some bivalve mollusks of ceramidaceae first appeared in the Konek stage and were found in large numbers in Salder. On the 46th floor of the quarry, the German-Polish scientific team discovered the appearance of Cremnoceramus deformation is erectus, the oldest Inoceramid species, which marked the time limit. Through careful study, they also found the characteristic changes of other microfossils and carbon isotopes 12C and 13C, that is, the so-called negative anomaly of carbon cycle.

"This means that variable geological sequences, such as continental shelf sediments in Mexico or deep seas in tropical Atlantic, can now be compared and classified in time," Professor Silke Voigt explained. "This is very important, because even in the case of incomplete continuity, we can accurately classify time and finally see, for example, what the climate in different parts of the world was like in the past."

Professor Ireneusz Walaszczyk said: "Salzgitter-Salder sequence is superior to other candidate sequences, such as those from the United States, India, Madagascar, New Zealand and Poland, because we have a perfect rock boundary sequence over 40 meters here, and we have a clear record of the events that occurred in this geological period."

"More than 250 million years ago, Zechstein Sea left a lot of salt layers in Bede Basin," André Bornemann explained. "Later deposited rock layers put pressure on these salt layers, and some of them expanded into large salt mounds, which deformed the young salt layers in the process. Salder is located near such a salt dome, so here, the Cretaceous strata rich in fossils suddenly stood upright, forming a wonderful section, which is very convenient for scientific investigation. This is why LBEG designated this place as a geological point, which is also one of the most important geological points in Hartz-Brunswick Erlan-Ostfallon UNESCO World Geopark. "