Dating Old Testament- Mt.Gerizim is the Oldest Temple for small local god yahweh

The Old Testament(OT) of Bible as per Catholics is 46 books and as per other sects it is 39.
Old Testament is split as 3 groups.

Torah- Law; Nevium or Nabis- Prophets: Ketuvim - Writings
Jews call their Bible as TaNakh with first Letter of the above.
The Bible OT of today is all about ZION- Temple mount of Jerusalem as the only Dwelling place of that small local god of Israel - Lord Yahweh.

Matthew 11:13 For all the Prophets and the Law prophesied until John.
Luke 16:16   "The Law and the Prophets were proclaimed until John. Since that time, the good news of the kingdom of God is being preached, and everyone is forcing their way into it.

Only at one place Fictional portion Jesus after been Resusticated to his old body, and words have been put on his mouth
Luke 24:44 Jesus  said to them, "This is what I told you while I was still with you: Everything must be fulfilled that is written about me in the Law of Moses, the Prophets and the Psalms."

Ketuvim or Writings were  not fully added to OT canon. 

ZION or Jerusalem Temple is the crux of Old Testament and we find Jesus discussion as said by John 4 in dialogue with a Samaritan woman.

John 4:20 Our ancestors worshiped on this mountain, but you Jews claim that the place where we must worship is in Jerusalem."21Jesus replied, "Believe me, dear woman, the time is coming when it will no longer matter whether you worship the Father on this mountain or in Jerusalem.22 You Samaritans worship what you do not know; Jews worship what we do know, for salvation is from the Jews.
As per Dead Sea Scrolls - Torah Lord chose Samarian Mt.Gerizim as his Dwelling Place and Temple. 

   
http://blogs.owu.edu/magazine/the-discovery-of-an-unknown-dead-sea-scroll-the-original-text-of-deuteronomy-27/

The Discovery of an Unknown Dead Sea Scroll:  Original Text of Deuteronomy 27?

Mount Gerizim The mountain is sacred to the Samaritans who regard it, rather than Jerusalem's Temple Mount, as having been the location chosen by Yahweh for a holy temple. The mountain continues to be the centre of Samaritan religion to this day, and over 90% of the worldwide population of Samaritans live in very close proximity to Gerizim, mostly in Kiryat Luza, the main village. The passover is celebrated by the Samaritans on Mount Gerizim, and it is additionally considered by them as the location of the near-sacrifice of Isaac (the masoretic,Septuagint and the Dead Sea Scroll versions of Genesis state that this happened on Mount Moriah.
As per Archaelogical analysis Samaritans is the original Hebrews. Israel got populated as  a country  930 BCE. and Judea only after 725 BCE.

Israel's Other Temple: Research Reveals Ancient Struggle over Holy Land Supremacy. 

http://www.spiegel.de/international/world/new-research-shows-that-jerusalem-may-not-be-the-first-temple-a-827144.html

No Mention of a 'Chosen Place'

That, in any case, is what stands in the oldest Bible texts. They are brittle papyrus scrolls that were made over 2,000 years ago in Qumran, and have only recently been examined by experts.

In the Hebrew Bible, which Jerusalem's priests probably spent a good deal of time revising, everything suddenly sounds quite different. There is no longer any mention of a "chosen place."

The word "Gerizim" has also been removed from the crucial passage. Instead, the text states that the Yahweh altar was erected on "Ebal." "By naming the mountain of the curses," says Schorch, "they wanted to cast the entire tale in a negative light, and deprive Gerizim of its biblical legitimacy."

Schorch dates the intervention to around 100 BC. The researcher stops short of calling it fraud, though, preferring to label it an "adaptation of the Bible to their own religious view."

Not a single shred of archaeological evidence has ever been found to confirm the existence of Solomon's Temple.

Deuteronomy 11:29  "When the LORD your God brings you into the land and helps you take possession of it, you must pronounce the blessing at Mount Gerizim and the curse at Mount Ebal.

Jesuswas claiming superiority over Samaritans with Forgery.     Jews have been people without God and Uncivilised Nomadic Pastorals . Claiming superiority over Biblical Fictions Jesus Proves himself As a Blind Fundamentalist.

Entire Old Testament is a Fiction made in Ist Century BC.