Clipping

A geóloga e professora Maria José Mesquita afirmou ao Radar News, nesta quarta-feira (18), que o acordo entre o governador de Goiás, Ronaldo Caiado, e os Estados Unidos sobre minerais críticos é um tema de interesse nacional e, por isso, deve ser conduzido pelo Governo Federal.

The discovery, described in the journal Geology, happened by chance when a resident of the Brazilian state of Minas Gerais reached out to scientists interested in meteorites to identify an unusual glass-like object he had found on his property. The object was sent to geologist Álvaro Penteado Crosta of Universidade Estadual de Campinas in São Paulo, who was initially skeptical that it could be a tektite.

Para Rafael Straforini, a retirada da disciplina da matriz curricular obrigatória, bem como a consequente dúvida do professor sobre qual conhecimento geográfico ensinar na área de “Ciências Humanas e Sociais Aplicadas”, levaram a Geografia Escolar à “maior crise em sua história”. Essa crise, no entanto, não é apenas disciplinar: ela é o reflexo de um projeto de sociedade que pretende eliminar a reflexão crítica sobre o espaço e o território, justamente porque tais reflexões podem levar à contestação da ordem vigente.


Francisco Fernandes Ladeira é pesquisador de pós-doutorado do IFMG – campus Ouro Preto. Doutor em Geografia pela Unicamp. Autor do livro “Palestina na geopolítica global Pós-2023: Narrativas e Contranarrativas” (Editora CRV)

Para a professora Maria Beatriz Machado Bonacelli, do Departamento de Política Científica e Tecnológica da Universidade Estadual de Campinas, a decisão revela o posicionamento do governo diante de um patrimônio científico construído ao longo de décadas. Ela lembra que os institutos de pesquisa agrícola do Estado nasceram justamente para sustentar o agronegócio paulista.

These blobs of material represent spray from melted rock that was liquefied in the impact, then rapidly cooled and hardened to form pebble-like glass objects, some the size of a pea and others as large as a golf ball, known as tektites.

The resulting tektite strewn field is one of only a handful discovered to date.

"I was very surprised!" geologist Álvaro Penteado Crósta of the University of Campinas in Brazil told ScienceAlert. "Tektites are a very rare material on Earth."

The findings were detailed in the journal Geology by a research team led by Álvaro Penteado Crósta, a geologist and senior professor at the Institute of Geosciences at the State University of Campinas (IG-UNICAMP). The project involved collaborators from Brazil, Europe, the Middle East, and Australia.

Their research is titled "Geraisite: The first tektite occurrence in Brazil," and it's published in the journal Geology. The lead author is Álvaro Crosta, a geologist and senior professor at the Institute of Geosciences at the State University of Campinas.

“This growth in the area of occurrence is entirely consistent with what is observed in other tektite fields around the world. The size of the field depends directly on the energy of the impact, among other factors,” Álvaro Penteado Crósta, a geologist and senior professor at the Institute of Geosciences at the State University of Campinas (IG-UNICAMP), said. The findings were detailed in the journal Geology. The discovery means that South America witnessed an ancient impact, something rarely seen in the history of the continent. However, the collision did not create a crater.

For millions of years, Earth’s history has been shaped by cosmic impacts, yet one ancient collision in Brazil remained hidden, until now. A recent study published in Geology has uncovered evidence of a meteorite strike that occurred 6.3 million years ago. Led by Álvaro Penteado Crósta, the discovery reveals a new field of tektites, expanding our understanding of extraterrestrial impacts and their geological influence in South America.

The findings were detailed in the journal Geology by a research team led by Álvaro Penteado Crósta, a geologist and senior professor at the Institute of Geosciences at the State University of Campinas (IG-UNICAMP). The project included collaborators from Brazil, Europe, the Middle East, and Australia.