Honestly, I am just trying to double check my work and to see if I have done thi

Question

Honestly, I am just trying to double check my work and to see if I have done this exercise correctly.

Order geological events from oldest (#1) to youngest (#16)

Formation of angular unconformity  

Formation of nonconformity

Intrusion of granite (Gr)

Intrusion of diorite (Di)

Formation of andesite (V)

Formation of conglomerate (Cg)

Formation of limestone (Lma)

Formation of limestone (Lmb)

Formation of sandstone (Ssc)

Formation of schist (M)

Formation of shale (Sha)

Formation of shale (Shb

Formation of siltstone (Slt)  

Folding/tilting of Paleozoic and Precambrian rocks

Rock Type Information

Ss (a, b, and c) = sandstone, Cg = conglomerate,

Sh (a and b) = shale, Slt = siltstone,

Lm (a and b) = limestone, V = andesite,

M = kyanite-garnet-biotite schist, Di = diorite,

Gr = Granite Age Information

• Fossils in Ssa are Lower Eocene (Ypresian)

• Fossils in Lmb are Middle Pennsylvanian

• Fossils in Ssc are Early Ordovician

• Biotite in andesite is 450 Ma

• Zircon minerals in Ssb are 750 Ma

• Zircon minerals in granite are 600 Ma

• Zircon minerals in granite clasts in the conglomerate are 600 Ma

• Zircon minerals in diorite are 260 Ma

There is an angular unconformity ad a nonconformity in the sequence of rocks shown by the darker wiggly lines

E ! Cenozoic { Lma Lma · Ssa. ...:...S. Ssa OP ' - Lmb — Shb - -- Shb - Sitz 2. Ssc. Sit Die ( Paleozoic SSC .. X X Gr X Gr e Cge e

Explanation / Answer

By careful observation of the given map the geological events from oldest (1) to youngest(8) are as follows :

8. Deposition of Cenozoic rock group - sandstone(Ssa), limestone(Lma) and shale(Sha).

7. Formation of angular unconformity

6. Folding/Tilting of the Palaeozoic rock group

5. Intrusion of Diorite(Di)

4. Deposition of conglomerate(Cg), sandstone (Ssc), siltstone(Slt), andesite(V), shale(Shb), limestone(Lmb) ans sandstone(Ssb)

3. Formation of nonconformity

2. Intrusion of granite (Gr)

1. Formation of schist (M)

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