Alternatinglayers of hematite and chert

Assignment Help Other Subject
Reference no: EM13330078

Banded iron formations (BIFs) consist of thin, alternatinglayers of hematite (iron oxide) and chert (miroscopically small crystals of quartz). ManyBIFs formed in Earth’s earliest oceans but none form today despite theabundance of shallow ocean environments that offer potential for their formation. Scientistsbelieve that the reason for this is a drastic change in Earth’s atmosphericcomposition from its formation to the present day. What is the atmospheric change that has preventedmodern BIFs from forming? (be as specific as possible in your answer).

Reference no: EM13330078

Questions Cloud

What are the strength and direction of an electric field : What are the strength and direction of an electric field that will balance the weight of a 1.2 g plastic sphere that has been charged to -2.9 nC
Develop a detailed design to support the ccrd : A logical view (class diagram) showing all classes required to support the CCRD use case, including all required attributes methods, and inheritance, compositional, or using relationships.
Write up stating the authority drawn : Suppose you are planning to buy a new machine POPO CORN machine. The machine will cost $450,000 and would last for three years and have salvage value zero.
What was the inital particles speed : A 100 MeV particle decays into two particles. one of these two particles has a mass of 10 MeV and a speed of 3/5. what was the inital particle's speed
Alternatinglayers of hematite and chert : Banded iron formations (BIFs) consist of thin, alternatinglayers of hematite (iron oxide) and chert (miroscopically small crystals of quartz). ManyBIFs formed in Earth’s earliest oceans but none form today despite theabundance of shallow ocean enviro..
What is her mass after throwing the ball : A 100kg astronaut carrying a 1kg ball as she flies past a space station with a velocity of 3/5. what is her mass after throwing the ball
Identify the major design forces affecting the system : Develop a high level component view of your architecture and demonstrate how it will support the CCRD use case with a ‘use case trace'. Show how your architecture will map to the physical deployment environment with a deployment diagram.
What is the energy of the photon torpedo in frame of earth : A spaceship with rest mass m0 is traveling with an x-velocity V0x=+4/5 in the frame of the earth. what is the energy of the photon torpedo in the frame of earth
Calculate the change in the kinetic energy of the car : A car of mass 1,800 kg is initially traveling at a speed of 15 m/s. Calculate the change in the kinetic energy of the car

Reviews

Write a Review

Other Subject Questions & Answers

  Social change possibility

Offer a brief description of the age/stage and social change possibility you selected. Then explain actions you could take to bring about social change for that possibility.

  What liability an employer has with regard to sexual harass

Describe two types of Sexual Harassment, what liability an employer has with regard to Sexual Harassment by its employees, and how it can protect against claims.

  Preparing dramatic play area

You are preparing a dramatic play area in your 1st and 2nd grade multi-age classroom. how would you include props and materials to interate as many curricular disciplines as possible?

  What other movements occur in the foot

Sit on a table with the knee flexed over the edge. Gently dorsiflex the ankle. What other movements occur in the foot during this dorsiflexion? In what articulations do these movements occur? Why are they associated with dorsiflexion?

  Theoretical perspectives in sociology

I want help comparing the differences among the three major theoretical perspectives in sociology (structural-functionalism, conflict theory, and symbolic interactionism).

  Pros and cons of public health officers power

I have been asked to discuss the pros and cons of public health officers/ environmental health officer having powers to force people to take action to prevent the spread of communicable diseases.

  What is workplace violence

What is workplace violence? To what degree is workplace violence a problem in the United States? And what factors contribute to workplace violence?

  Complaints of abdominal pain

RT is 78-year-old male who presents to his doctor's office with complaints of abdominal pain.

  Importance of effective infection control program

Discuss the importance of an effective infection control program and how can a good program help improve the environment of care?

  Discussing the decision of the court in this case

Prepare a 350- to 700-word paper discussing the decision of the court in this case. Was it fair and defensible from an ethical viewpoint? If so, then why? If not, why not?

  Period between finding of guilt and sentencing

Which of the following is conducted by the probation agency at the request of the judge, usually during the period between the finding (or plea) of guilt and sentencing?

  Consumer food product-invested heavily-national advertising

Suppose you introduced a new consumer food product and invested heavily in (1) national advertising (pull strategy) and (2) motivating your field salesforce to sell the product to food stores (push strategy).  What kinds of feedback would you receive..

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd