Discover and read the best of Twitter Threads about #Geology

Most recents (24)

2/“By drilling into sediment cores 100s of feet beneath Antarctica’s sea floor, scientists discovered that during previous periods of global warming—3M & 15M yrs ago—loose sediment layers formed & slipped, sending massive tsunami waves to the shores of S America, NZ & SE Asia.”
3/“Weak layers beneath 3 submarine landslides, consist of…oozes & glaciomarine diamicts. The lithological differences, from glacial to interglacial variations in biological productivity, ice proximity & circulation, caused changes in deposition preconditioning slope failure.”
Read 5 tweets
Hoy en #PlanetaTierra hablamos de MINERALES

¿Te apuntas a un repaso rápido? Ein?

#geology #geologia #minerales ⛏️💎💎 ⤵️⤵️ ImageImageImage
¿Qué son los MINERALES? 🤔💭

Pues, fíjate tú, no hay consenso sobre lo que se entiende exactamente por un MINERAL, pero hay acuerdo general en que es un material sólido, cristalizado y homogéneo en condiciones "normales" de temperatura y presión ImageImage
La mineralogía es la parte de la geología que se dedica al estudio de los minerales
Read 16 tweets
Hoy en #PlanetaTierra: BLOQUE ERRÁTICO

roca de diversos tamaños y tipos, aislada y sin conexión aparente con su entorno geológico. Pueden encontrarse tanto en medio de las llanuras como en las cimas de las colinas , digna de cuarto milenio, muajajajaja ⤵️⤵️ #geologia #geology
El nombre "errático" procede de la idea de que representan peñascos "perdidos". Su origen desconcertó a los primeros geólog@s del siglo XVIII, que no podían entender qué proceso podía haber movido rocas de varias toneladas, a menudo a lo largo de varios cientos de km ⤵️⤵️
Se pusieron a darle al coco y se barajaron varias hipótesis más o menos descabelladas para explicar el movimiento de estos peñascos: inundaciones, crecidas fenomenales, deshielo repentino de glaciares, explosiones subterráneas y otros cataclismos diversos ⤵️⤵️
Read 12 tweets
A new seismic study shows that Earth has five inner layers, not four as long believed. Inside Earth's inner core is an *inner-inner* core, a ball of white hot iron 1300 km (800 miles) wide. science.anu.edu.au/news-events/ne… #Geology #earthquakes Schematic showing the newly confirmed inner-inner core of th
Researchers at Australian National University developed a clever way to sense seismic waves reverberating inside the Earth. Those echoes made it possible for them to sense the growing metallic seed at the center of our planet. nature.com/articles/s4146… #Perspective Diagram of the seismic network used to study Earth's complex
The innermost inner core is Earth's fifth layer. Which means it is the perfect setting for a movie sequel that merges The Core with The Fifth Element.
Read 4 tweets
Hoy en #PlanetaTierra 🧵⤵️

El color de los sedimentos y las rocas sedimentarias

Colorinchis 💚💛🧡❤️🖤

Es una de las primeras y más evidentes características de una roca, aunque es importante distinguir el color de una roca "fresca" que el de una con superficie meteorizada ⤵️ Image
Los sedimentos tienen casi siempre cantidades pequeñas de sustancias fuertemente colorantes: los pigmentos. La naturaleza de estos colorantes depende de las condiciones paleoambientales en las que el material se ha formado #geology ⤵️ Image
Los pigmentos principales de las rocas sedimentarias son el hierro y la materia orgánica; y de su presencia y proporción resulta esencial en los colorinchis que observamos en estas rocas #geología⤵️ Image
Read 22 tweets
1/6 Most of the new #discovery announcements and good first holes ends up as a minor discovery.

How to spot significant discoveries as an investor?
2/6 Three steps to follow🪜:

1) Study significant discoveries
2) Study the failed discoveries
2) Learn the essentials of geology

Let's dig in.
3/6 Do the following:
• Select commodity of interest e.g. #copper #nickel #uranium #gold
• Study top discoveries made in the last years
• Look at announcements (grades, footprint, structures, geophysical anomalies etc.)
• Put it into a system
Read 6 tweets
Vamos con un 🧵⤵️, hoy en #PlanetaTierra:

¿Cómo ayudó el estudio de las ondas sísmicas a comprender la estructura interna de la Tierra?

#geology #geología ⤵️⤵️
Nos situamos en el año 1889, en Potsdam, #Alemania , cuando tuvo lugar el primer registro de un terremoto utilizando un sismógrafo. Se registró un sismo de # Japón, a casi a 9.000 km de distancia, casi ná ⤵️⤵️
Perfeccionando el método de registro (1897) R.D. Oldham caracterizó por 1º vez los diferentes tipos de ondas sísmicas: P, S y superficie. Gracias al análisis de los tiempos de propagación de las ondas generadas por varios sismos, estimó que el interior de la Tierra no es uniforme
Read 24 tweets
#MondayMood

Let's learn more about Marie Tharp!

⚡️Marie Tharp was an American geologist and oceanographer. She helped map the ocean floor.

#GoogleDoodle #MarieTharp #Geology #oceans Image
⚡️ The map led Tharp to realize that the ocean floor could help prove the scientific theory of continental drift and the idea that the continents are moving.
⚡️ In the late 1940s, Tharp began working as a research assistant at the @Lamont_Doherty at Columbia University, NY. This is where she met her fellow geologist Bruce Heezen, with whom she would work for the next 30 years.
Read 10 tweets
#geology
#ancient
#rocks
#Finland
کما کیوی چٹان (ساؤتھ کیریلیا، فن لینڈ) 11,000 سال قبل
Kummakivi Rock (South Karelia)
11,000 yrs ago
بےشک "Rock-Cut Art" انسانی ہاتھ کا اوج کمال ھے مگر قدرت کو چیلنج کرنا ناممکن ھے۔
ساءوتھ کیریلیا (فن لینڈ) کےقدرتی جنگلات میں واقع "کما کیوی چٹان"
جسےمقامی زبان میں "Strange Stone" کہا جاتا ھے، اپنے منفرد انداز اور توازن سےمشہور ھے کیونکہ یہ دو پتھروں پر مشتمل ھے۔ یہ چٹان 500 ٹن سے زائد وزنی اور 7 (22.97 feet) میٹر سے زائد چوڑی اور 5 میٹر اونچی ھے۔
گیارہ ہزار سال سے یہ چٹان اپنے اسی توازن سے قائم ھے جو قدرتی مہارت کا بہترین
نمونہ ھے۔ ایک پتھر دوسرے کے اوپری حصے پر غیر یقینی طور پر بیٹھا ھے۔ اگرچہ اوپری چٹان سے ایسا لگتا ھے جیسے یہ کسی بھی وقت گر سکتی ھے مگر ایسا ممکن نہیں۔
دونوں چٹانوں کو جوڑنے والا پوائنٹ بہت چھوٹا ھے جو ایک دفعہ تو اپنے دیکھنے والوں کو پریشان ضرور کرتا ھے۔
چٹان کا اس قدر نازک
Read 4 tweets
A lot of investors that is starting in #exploration stocks asks: "What is the bare minimum that I need to know about #geology to understand #mining exploration?"

"Faults", "folds" and "fractures" are must to know!

Why? 🧐🧵 Image
1⃣ They form important trapping sites for mineralised fluids and also hydrocarbons. Image
2⃣ They form important pathway for fluids to travel through surrounding hard rocks and tend to focus flow.

Below: "faults and fractures" forming in the middle of the "fold" due to bend of the rocks. Image
Read 5 tweets
🚨Welcome to the Iberian Evaporite Structure Database! The first comprehensive assessment of evaporite structures carried out in any region of the world: iesdb.eu
Want to know more? ⬇️🔔🧵🔔⬇️ 1/10
Evaporite rocks have unique mechanical properties compared to other rock types, and worldwide evaporite formations have been proposed as suitable subsurface storage sites for carbon, nuclear waste, and Geo-Energy applications, which are key for the Energy Transition 🌎🌍🌏. 2/10
The IESDB includes data of the surface and subsurface stratigraphy, structure, chronology and mining history of outcropping and buried evaporite structures, including a set of maps, sketches and cross-sections: there are 454 data entries per structure! ⚙️📑📊 3/10
Read 12 tweets
#GeoVuelta – stage 4. The first stage on Spanish soil brings the peloton through the El Torruño soils – the Rioja terroir that is a close relative of the Bordeaux wines of southern France. Logical: sediments of both regions came from the Pyrenees, mixed with calcium carbonate. https://www.mrvinos.com/regiones-del-mundo/176/la-rioja
The #geology of northern Spain consists of rocks that were deformed between 80 and 20 million years ago when the Pyrenees formed (more about that later), and to the south a large basin of the Ebro river, that today transports sediments to the #Mediterranean Sea... https://en.wikipedia.org/wiki/Ebro#/media/File:SpainEbroBasi
The Ebro only reached the #Mediterranean 8 million years ago. Before, the basin was an enormous, elevated lake (making Rioja soils), until erosion of the Catalan Mountains connected it to the coast, as shown by Spanish geologist @danigeos in this clip!
Read 3 tweets
#ancient
#Archaeology
Rock-Cut Art
Cappadocia Caves (Anatolia, #Turkey)
کپاڈوشیا غار (ترکی)__3rd BC
Hatti Culture
دھاتی عہد کے ہٹی کلچر کا مرکز اناطولیہ کو کہا گیا ھے۔
کپاڈوشیا (اناطولیہ) سے دریافت ھونے والے Neolithic عہد کے مٹی کے برتن، اوزار، پہاڑوں کی تشکیل، تیسری صدی قبل مسیح
کی باقیات، ہزاروں مٹی کی گولیاں اس شہر کے قدیم ھونے کا ثبوت ہیں۔
اناطولیہ کا قدیم ضلع Cappadocia موجودہ ترکی کے مرکز میں Taurus Mountains کی ناہموار سطح مرتفع پر واقع ھے۔ Cappadocia کی ساری زمین ہی نرم آتش فشاں چٹان پر مشتمل ھے۔
نرم ریتلے پتھروں سے بنے یہ قدیم غار چٹانی طرزِتعمیر
میں مقامی لوگوں کے گھر ہیں۔
غار، میوزیم، چرچ، ڈائننگ روم، خانقاہ، کچن پر مشتمل یہ پورا شہر ھے۔
بازنطینی اور اسلامی دور کے پتھر سے کٹے ہوئے گرجا گھر اور زیر زمین سرنگ کے احاطے پورے دیہی علاقوں میں بکھرے ھوئے ہیں۔
یہ شاندار اور حیران کن سائیٹ "Göreme National Park" ترکی کا
Read 4 tweets
It’s #FridayFault time again and I’ve rediscovered our collection of fabulous wooden block fault models 🤩 a mini thread of videos for teaching intro #geology 👇 1/11
Faults are described by both orientation (dip and strike of the fault plane itself) and displacement (amount and sense of movement) In this model the fault plane dips ~45 degrees .. 2/11
If the movement (slip) is all in the direction of the strike, it’s called a strike-slip fault .. 3/11 #StrikeSlipFault
Read 11 tweets
Want to learn about the rocks of Mt #Everest and the #EBC trek? I am a geologist and did a couple of roadside lectures and field observations on my trek; here are some of the cool rocks l found. 1/n #geology #Himalayas #Nepal #adventure #Science #academia #nature
Over 50 million years ago, there was an ocean between India and Eurasia, the Tethys ocean. The ocean closed and the two continental plates collided forming the Himalayas. The Himalayas are still growing today! 2/n
Imagine being pressed between two continental plates! That pressure forms metamorphic rocks that can be categorized into how much pressure was applied to the rock. At low pressure, former mudstones from the bottom of the ocean become slate: grey, flaky rocks. 3/n
Read 10 tweets
Daily Bookmarks to GAVNet 02/02/2022 greeneracresvaluenetwork.wordpress.com/2022/02/02/dai…
A Billion Years of Time Are Mysteriously Missing. Scientists Think They Know Why.
vice.com/en/article/wxd…
#GrandCanyon, #geology, #GreatUnconformity, #TectonicModel
What Happens Next in Ukraine Could Change Europe Forever | Time
time.com/6143009/ukrain…
#InternationalRelations, #russia, #ukraine, #europe
Read 20 tweets
Issue #36: The Genesis of “Ledger Money” and the Modern Financial System

maroonmacro.substack.com/p/issue-36-the…

#LedgerMoney, #FinancialSystems, #DevelopmentTimeline
Modern culture blames parents for forces beyond their control | Aeon Essays

aeon.co/essays/modern-…

#culture, #essay, #AdultChildren, #ParentalEstrangement, #blame, #psychology, #responsibility
Read 17 tweets
Going to thread up some pix from today's #geology hike at #VasquezRocks.
(Why are those rocks right there? We'll get to that...) 🧵 In midground, tilted sandstone rocks lit up by the setting s
Here is a descent into a canyon in S end of park. That's where the geology story gets really wild.
Here's a view of a tree from a ridge where I measured strike and dip of the layers using a compass. Yellow green fall foliage tree lt up by back-angle sun. In f
Read 28 tweets
Daily Bookmarks to GAVNet 09/24/2021 greeneracresvaluenetwork.wordpress.com/2021/09/24/dai…
COVID-19 is evolving to become more airborne, says recent study

jpost.com/health-and-wel…

#COVID19 #variants #AirborneTransmissibility
winter is coming, and the vaccine narrative is about to shift

boriquagato.substack.com/p/winter-is-co…

#COVID19 #seasonality #vaccinations #surges #winter #consequences
Read 8 tweets
Daily Bookmarks to GAVNet 08/16/2021 greeneracresvaluenetwork.wordpress.com/2021/08/16/dai…
Scientists Pin Down When Earth’s Crust Cracked, Then Came to Life

quantamagazine.org/scientists-pin…

#geology #PlateTectonics #life #evolution #origin
Next generation electronics: Expanding the possibilities with silver nanowires

phys.org/news/2021-08-e…

#electronics #nanowire #TechnologyDevelopment #materials
Read 8 tweets
#Geology Shiny ore deposit, pretty sure it‘s iron?
#ironore / pig iron in clay?
Area: Europe, North Switzerland
Read 4 tweets
LOS VOLCANES DE OLOT Y CHARLES LYELL

Uno de los lugares más especiales de la #geología peninsular, la zona #volcánica de #Olot (#Garrotxa, #Girona), recibió en el verano de 1830 la visita de uno de los grandes referentes de la #geología moderna (va #hilo👇).

#geosites #geology
1- Pues sí, quizá no se trate de los más espectaculares del mundo, pero ¿cuántas ciudades conocéis cuyo casco urbano se extiendan a los pies de tres #volcanes? #Lyell debió considerarlo también notorio y llegado el momento quiso comprobarlo en persona.
2- #CharlesLyell (1797-1875) nació precisamente en #Escocia el mismo año en que moría otro gran geólogo de la época, el escocés #JamesHutton. Una curiosa coincidencia, como la existente entre #Galileo (1564-1642) y #Newton (1642-1727). Casualidades…!
Read 11 tweets
Daily Bookmarks to GAVNet 06/23/2021 greeneracresvaluenetwork.wordpress.com/2021/06/23/dai…
Community-level evidence for SARS-CoV-2 vaccine protection of unvaccinated individuals

nature.com/articles/s4159…

#COVID19 #VaccinationRate #transmissibility #protection #unvaccinated
New research into the spreading of infections reveals need for greater collaboration between biology and physics

phys.org/news/2021-06-i…

#biology #physics #research #infections #spreading #collaboration
Read 8 tweets

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