Before this question can be answered satisfactorily, some details have to be clarified in the form of counter-questions:

What is the volume of the considered rock body? What kind of sedimentary rock is meant? How is the metamorphic grade? Which water type is meant exactly: hydration water ?, H2O and / or OH in the crystal lattice? fluid inclusions (brine)? water in pores? water in fissures? Water in joints?

With kind regards, Guenter Grundmann

Dear Vasyl,

It depends on different parameters and factors such as the type of host rock and the grade of metamorphism. As you know different rock types contain different amounts of water or fluid phase. For example sedimentary rocks usually contain higher amounts of water whereas mafic igneous rocks show lower levels of water. On the other side, in a metamorphic environment we deal with different water types including meteoric waters, magmatic waters, Fossil waters, and waters in the structure of minerals. So, considering to the level of metamorphism, different amounts of water can be released.

Regards,

Rahim

For Guenter Grundmann

What is the volume of the considered rock body? - 500-1000 м3

What kind of sedimentary rock is meant? - algylite

How is the metamorphic grade? - on reflection of vitrinite

Which water type is meant exactly: hydration water ?, H2O and / or OH in the crystal lattice? - H2O

fluid inclusions (brine)? water in pores? water in fissures? Water in joints? - water in pores and fissures.

I need a list of references.

Thank you!

Dear Rahim Masoumi .

I understand the various aspects of water formation in rock metamorphism.

I am writing an article about the formation of water in a particular field and I need to make a brief overview of the literature.

I need a list of references.

Thank you!

Rahim,

Water can be either taken up or given up by minerals during metamorphism. Is this thermal, dynamic or thermodynamic metamorphism? What is the metamorphic grade, temperature and pressure? What is the “bulk rock composition”, it doesn’t matter so much the rock type as the chemical composition? And as Guenter has pointed out, what type of water are we discussing? I’m assuming we are discussing bound water, hydration water?

What actually happens depends on the type and grade of metamorphism and the bulk rock composition of the sediment. For example, very mature dry quartz sandstone will produce a quartzite. Water will be neither be taken up or expelled, no matter how you metamorphose it. A less mature sediment with mostly quartz and feldspars may produce cordierite which takes up water and so on. Under other conditions sediments containing micas water can be driven off.

Dear Stephen Craven, thanks for the professional response.

Please write the papers that describe it.