@Lamont_Doherty

@Lamont_Doherty

Corey S. Powell

@coreyspowell

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

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

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

Germán S.G.

@ingeododo

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 ⤵️

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 ⤵️

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⤵️

Read 22 tweets

Equivest ⚒️💎

@equivestinvest

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

Germán S.G.

@ingeododo

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

SciSpace

@scispace_

#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

⚡️ 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

ਸਨਾ ਫ਼ਾਤਿਮਾ

@SanaFatima00

#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

Equivest ⚒️💎

@equivestinvest

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? 🧐🧵

1⃣ They form important trapping sites for mineralised fluids and also hydrocarbons.

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.

Read 5 tweets

Iberian Evaporite Structure Database

@IESDB_EU

🚨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

Geology of the Tour de France

@geotdf

#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.

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...

@danigeos

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

ਸਨਾ ਫ਼ਾਤਿਮਾ

@SanaFatima00

#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

Sandra McLaren

@sandramcgeo

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

Dr. Eva Linghan Scheller

@EvaLScheller

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

GAVNet

@GAValueNetwork

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

GAVNet

@GAValueNetwork

Daily Bookmarks to GAVNet 01/06/2022
greeneracresvaluenetwork.wordpress.com/2022/01/06/dai…

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

Michael J. Malaska

@mike_malaska

Going to thread up some pix from today's #geology hike at #VasquezRocks.
(Why are those rocks right there? We'll get to that...) 🧵

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.

Read 28 tweets

GAVNet

@GAValueNetwork

Daily Bookmarks to GAVNet 11/04/2021 greeneracresvaluenetwork.wordpress.com/2021/11/04/dai…

An Interview with Gigi Foster, Warrior Against Lockdowns

brownstone.org/video-podcast/…

#economics #lockdowns #mandates #australia #HumanRights #interview

What causes an Ice Age

zmescience.com/ecology/what-c…

#IceAge #IceSheetExpansion #glaciation #geology #complexity

Read 8 tweets

GAVNet

@GAValueNetwork

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

GAVNet

@GAValueNetwork

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

⚪️🦚🪡☢️ 𝙴𝚝𝚑𝚒𝚔𝚎𝚛

@APearlBird

#Geology Shiny ore deposit, pretty sure it‘s iron?

#ironore / pig iron in clay?

Area: Europe, North Switzerland

Read 4 tweets

José Luis Casamor

@batidivulga

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

GAVNet

@GAValueNetwork

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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