Recent questions tagged geology

Description : Is siderite a gemstone, mineral, meteorite, or all of the above?

Last Answer : I’m going to go with mineral, but minerals can look different depending on how they crystalize, so sometimes they can be shiny making them look like gems. https://en.wikipedia.org/wiki/Siderite

Description : A sample with excess Ar40 and atmosphere Are given an apparent age that is younger or older than the real age? why?

Last Answer : Homework questions are not really allowed here, on this site. Maybe someone will chime in, to say how you can go about finding the answer, but that’s about it. No straight answers.

Description : What happens to the space of the earth where oil was taken from?

Last Answer : answer:From here: Oil fields are not big caves in the ground despite how diagrams show them. Oil and gas are tucked into the spaces between the rock particles known as the porosity. An oil field is more like ... behind by the oil. You go from an oily block of rock (Styrofoam) to a watery one.

Description : Could you provide me Environmental geology 8th - Edward A. Keller?

Last Answer : answer:Here’s the study companion. Amazon.com has the 9th edition Here’s a list of sellers. Why can’t you buy online and ship? There is no ebook available, so you’re going ot have to find a way to get a physical copy.

Description : Anyone know anything about flintknapping?

Last Answer : I’m not sure exactly what you are asking. Do you think this arrowhead or dart is some sort of artifact? Are you asking how to make your own dart or arrow tips and how to find the right materials on your land?

Description : Geologically speaking, is there a risk that the Bosporus Strait and the Dardanelles Strait can close?

Last Answer : answer:I'm talking without knowledge here, so I apologize in advance. Ideally, we have a plate tectonic expert here? We'd need to know a few things. Like you mentioned, you'd want to know if ... you'd probably want to look into would be expected sea-level projections for 50 million years from now.

Description : Is it normal for earthquakes to be loud? Please read details.

Last Answer : Well the very earth undderneath you is colliding and crushing itself, I imagine something might have collapsed or something though. Not sure what would make an explosion sound.

Description : Any New Zealanders in the ask-public affected by today's quake?

Last Answer : I dont know but I hope Hawkeye is ok.

Description : Would life be better if we lived on Pangea?

Last Answer : australia is a massive super continent so if you want to see go there

Description : Why do the Snake River plain and the emperor seamounts trend in the direction that they do?

Last Answer : Have you asked your teacher about any of these questions? A TA? Other students? I assume that this is a college course, and college professors hold office hours for a reason, go and ask him/her. If ... I'm a geographer, not a geologist, so we're often a little shady on the really technical stuff.

Description : What is the half-life of the Rubidium-87 / Strontium-87 decay chain?

Last Answer : http://answers.yahoo.com/question/index?qid=20091020104308AAsZVxB Rb 87 half life = 5*10^11 years Sr 87 half life = 2.83 hours

Description : What is radioactive dating?

Last Answer : I totally thought it was something that replaced speed dating.

Description : What is a batholith?

Last Answer : Both are igneous rock intrusions. What distinguishes the sill is its sheet-like form, with fairly even thickness throughout. It's formed by magma intruding between layers of sedimentary rock. The ... feature is its massive size, having an exposed surface of more than 100 square kilometers.

Description : How did all that oil get down there?

Last Answer : http://news.google.com/newspapers?nid=336&dat=19630819&id=BlUOAAAAIBAJ&sjid=238DAAAAIBAJ&pg=6139,3807485

Description : Do you think scientists will be able to predict an earthquake more precisely and give people several hours advance warning?

Last Answer : I would hope so, but I'm not exactly counting on it. I'm no scientist so I'm not sure how close the scientific community is to a breakthrough in plate techtonics research, but I would think with ... the world, this kind of research might be cut back a little bit in favor of more pressing needs.

Description : What can we do to prevent a landslide?

Last Answer : Short of bringing in new soil, planting things is all you can do. I would suggest planting some very hardy plants/trees (even if they're typically unwanted breeds, like weeds) with deep growing roots, and ... so I can't give you any suggestions on specific plants, but that's really all you can do.